15.3 Intentional Torts, Strict Liability & Products Liability
Key Takeaways
- Intentional torts require intent to bring about the consequences of the act or knowledge with substantial certainty that the consequences will result; under the transferred intent doctrine, intent transfers between battery, assault, false imprisonment, trespass to land, and trespass to chattels.
- Defamation requires a false and defamatory statement of fact concerning the plaintiff published to a third party; public officials and public figures must establish actual malice (knowledge of falsity or reckless disregard under New York Times v. Sullivan), whereas private plaintiffs must prove at least negligence under Gertz v. Robert Welch. Slander per se presumes general damages.
- Defenses to intentional torts include consent (negated by fraud, duress, or incapacity), proportional self-defense and defense of others, defense of property (deadly force is strictly prohibited under Katko v. Briney), and necessity (public necessity confers an absolute privilege; private necessity is a qualified privilege requiring compensation for actual property damage).
- Strict liability imposes liability without fault for abnormally dangerous activities (high degree of risk, inability to eliminate risk through due care, activity not in common usage under Rylands v. Fletcher) and wild animals or domesticated animals with known vicious propensities.
- Under Restatement (Second) of Torts § 402A, strict products liability holds commercial sellers liable for products sold in a defective condition unreasonably dangerous to consumers; defects are classified as manufacturing defects, design defects (evaluated under consumer expectations or risk-utility tests), or failure to warn.
15.3 Intentional Torts, Strict Liability & Products Liability
[!NOTE] NALS PP Exam Blueprint Focus: Intentional torts, strict liability, and products liability form a foundational segment of Part 4 (Advanced Substantive Law) of the NALS Professional Paralegal (PP) Certification Exam. Paralegals must distinguish specific intent from general intent, apply the transferred intent doctrine across traditional trespassory torts, analyze the elements and defenses for battery, assault, false imprisonment (including the shopkeeper's privilege), and intentional infliction of emotional distress (IIED), differentiate trespass to land and chattels from conversion, apply the constitutional fault standards of New York Times v. Sullivan and Gertz v. Robert Welch in defamation, analyze privacy torts, evaluate abnormally dangerous activities under Rylands v. Fletcher, and master strict products liability under Restatement (Second) of Torts § 402A across manufacturing defects, design defects, and failure to warn.
While negligence actions center on conduct that falls below an objective standard of reasonable care, the common law imposes liability in two other fundamental arenas: Intentional Torts, where the defendant acts with deliberate purpose or substantial certainty of consequences, and Strict Liability, where liability is imposed by operation of law without regard to the defendant's blameworthiness or fault.
1. The Concept of Intent & The Transferred Intent Doctrine
The Legal Meaning of Intent
In tort law, intent does not require malice, hostility, or a desire to cause physical injury. Under Restatement (Second) of Torts § 8A, intent denotes that the actor either:
- Specific Intent: Acts with the purpose or conscious desire of bringing about the tortious consequence; or
- General Intent: Knows with substantial certainty that the tortious consequences will result from their act (Garratt v. Dailey, 279 P.2d 1091 (Wash. 1955)—a five-year-old child who pulled a chair out from underneath an elderly woman was liable for battery because he knew with substantial certainty she would hit the ground).
The Transferred Intent Doctrine
Under the Transferred Intent Doctrine, when an actor intends to commit an intentional tort against one person, but instead (or additionally):
- Commits a different intentional tort against that same person; or
- Commits the intended tort against an unintended third person; or
- Commits a different intentional tort against an unintended third person;
...the actor's tortious intent is transferred by operation of law to the resulting tort or victim. Transferred intent operates exclusively across the five traditional trespassory torts:
- Battery
- Assault
- False Imprisonment
- Trespass to Land
- Trespass to Chattels (Note: Transferred intent does NOT apply to Intentional Infliction of Emotional Distress or Conversion).
2. Intentional Torts Against the Person
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| Intentional Torts Against the Person |
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| Tort Action | Prima Facie Elements | Critical Practice Distinctions |
+------------------+-----------------------------------+--------------------------------------------+
| Battery | (1) Harmful or offensive contact; | Contact with items intimately attached to |
| | (2) to plaintiff's person; | plaintiff (clothing, plate, cane) counts; |
| | (3) intent; (4) lack of consent. | plaintiff need not be conscious of contact.|
+------------------+-----------------------------------+--------------------------------------------+
| Assault | (1) Intentional act; (2) creating | Apprehension = expectation/awareness (not |
| | reasonable apprehension in | fear); words alone insufficient without |
| | plaintiff; (3) of IMMINENT battery| menacing overt act; conditional words bar. |
+------------------+-----------------------------------+--------------------------------------------+
| False | (1) Intentional confinement; | Must be bounded area with no reasonable |
| Imprisonment | (2) to a bounded area; | escape known; plaintiff must be conscious |
| | (3) absence of reasonable escape; | of confinement or suffer actual harm; |
| | (4) consciousness/actual harm. | merchant shopkeeper's privilege applies. |
+------------------+-----------------------------------+--------------------------------------------+
| IIED | (1) Extreme/outrageous conduct; | Conduct must exceed all bounds of decency; |
| (Emotional | (2) intent or recklessness; | severe emotional distress required; no |
| Distress) | (3) causation; (4) severe distress| physical symptoms required in most states. |
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1. Battery
A battery is the intentional causation of harmful or offensive contact to the plaintiff's person without consent.
- Harmful Contact: Physical injury, impairment, bodily pain, or structural trauma.
- Offensive Contact: Contact that offends a reasonable person's sense of personal dignity (objective standard). Unwanted kissing, spitting, or touching is battery.
- Plaintiff's Person: Extends beyond the physical body to include anything intimately connected with the plaintiff's person, such as clothing, a walking cane, a purse being carried, or a plate knocked out of a person's hand (Fisher v. Carrousel Motor Hotel, Inc., 424 S.W.2d 627 (Tex. 1967)).
- Consciousness Not Required: The plaintiff does not need to be conscious of the contact at the time it occurs (e.g., unauthorized surgery or non-consensual touching while the plaintiff is under general anesthesia).
2. Assault
An assault is an intentional act that causes the plaintiff to experience reasonable apprehension of an imminent harmful or offensive contact (battery).
- Apprehension vs. Fear: Apprehension does not mean fear, terror, or fright. It means the plaintiff has a reasonable perception, anticipation, or awareness that an imminent battery is about to take place. An imposing heavyweight boxer can be assaulted by a smaller individual if the boxer perceives an incoming punch.
- Imminence: The threatened contact must be immediate. Threats of future violence ("I will beat you up next Friday") or threats made over long-distance telephone do not constitute an assault.
- Words Alone: Words alone generally do not constitute an assault without an overt menacing act (e.g., reaching into a jacket, clenching a fist). However, words can negate an assault by removing reasonable apprehension (e.g., "If you weren't an elderly man, I would strike you").
3. False Imprisonment
False imprisonment is the intentional, unprivileged confinement or restraint of a person within a bounded area without a reasonable means of escape, where the person is either conscious of the confinement or suffers actual harm.
- Bounded Area: The plaintiff's freedom of movement must be constrained in all directions. If a reasonable, safe, and readily known means of escape exists (e.g., an unlocked exit door), the area is not bounded.
- Confinement Mechanics: Confinement may be achieved through physical barriers, physical force, actionable threats of immediate physical force directed at the plaintiff or family members, or an invalid assertion of lawful authority (false arrest).
The Shopkeeper's Privilege
To prevent merchants from facing catastrophic false imprisonment lawsuits when stopping suspected shoplifters, statutory and common law recognize the Shopkeeper's Privilege:
- Reasonable Grounds: The merchant must possess reasonable grounds (probable cause) to believe a theft has occurred;
- Reasonable Manner: The detention must be conducted in a reasonable manner (no excessive physical force, strip searches, or public humiliation); and
- Reasonable Duration: The detention must last for only a reasonable, limited time necessary for a brief investigation or to summon law enforcement.
4. Intentional Infliction of Emotional Distress (IIED)
IIED occurs when a defendant, by extreme and outrageous conduct, intentionally or recklessly causes severe emotional distress to the plaintiff.
- Extreme and Outrageous Conduct: Conduct that exceeds all possible bounds of decency tolerated in a civilized community. Mere insults, indignities, bad manners, or profanity are insufficient.
- Elevated Vulnerability: Conduct becomes outrageous if the defendant has knowledge of the plaintiff's peculiar susceptibility (e.g., children, pregnant women, elderly persons) or occupies an authoritative position (e.g., bill collectors using extreme harassment, police officers, employers).
- Severe Distress: The plaintiff must suffer severe emotional distress beyond what a reasonable person could be expected to endure. While medical records or psychiatric treatment strongly corroborate severity, physical bodily symptoms are no longer required in the vast majority of jurisdictions.
3. Intentional Torts Against Property
1. Trespass to Land
Trespass to land is the intentional, unauthorized physical invasion of real property owned or lawfully possessed by another.
- Physical invasion occurs whenever an actor personally enters the land, causes another person or tangible object to enter (e.g., throwing boulders or dumping chemical waste), or fails to remove an object they have an affirmative duty to remove.
- The tort protects the surface of the land, the subterranean space beneath, and the immediate airspace above the land to a reasonable height necessary for full enjoyment.
- Mistake of Fact: A good-faith belief that the actor owned the land or had permission is no defense; the intent required is merely the intent to enter the physical space.
- Damages: Actual physical damage is not required; nominal damages are awarded to vindicate property rights.
2. Trespass to Chattels vs. Conversion
Both torts protect personal property (chattels) from intentional interference, but differ fundamentally in the degree of interference and the remedy awarded:
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| Trespass to Chattels vs. Conversion |
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| Analytical Factor | Trespass to Chattels | Conversion (Forced Sale) |
+--------------------------+-------------------------------------+----------------------------------+
| Severity of Interference | Minor or moderate intermeddling, | Substantial, total dominion or |
| | dispossession, or temporary use. | destruction of the chattel. |
+--------------------------+-------------------------------------+----------------------------------+
| Actual Damage Required | YES: Plaintiff must prove actual | Presumed: Destruction, theft, or |
| | financial damage or loss of use. | permanent refusal to return. |
+--------------------------+-------------------------------------+----------------------------------+
| Legal Measure of Relief | Actual damages: cost of repair or | FULL FAIR MARKET VALUE of the |
| | rental value for loss of use. | chattel at time of conversion. |
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Example of Distinction: If a neighbor takes your lawnmower without permission, uses it for two hours, and returns it with a full tank of gas unharmed, it is a minor trespass to chattels (actionable only for nominal loss of use). If the neighbor takes the lawnmower, drives it over a rocky cliff destroying it completely, or pawns it to a third party, the interference is so profound that it constitutes conversion, obligating the neighbor to pay the full fair market value of the mower.
4. Defenses to Intentional Torts
1. Consent
Consent is an absolute defense to intentional torts. It may be express (written or oral permission) or implied (inferred from custom, conduct, or participation in contact sports).
- Capacity: Consent is void if given by a minor, mentally incompetent individual, or severely intoxicated person.
- Vitiation by Fraud or Duress: Consent induced by fraudulent misrepresentation of a material fact (e.g., lying about having a contagious venereal disease before sexual contact) or physical duress is legally invalid.
- Exceeding Scope: Engaging in conduct exceeding the reasonable scope of consent invalidates the defense (e.g., a boxer throwing an illegal punch after the bell rings or biting an opponent's ear).
2. Self-Defense & Defense of Others
An actor is privileged to use reasonable, proportional force to protect themselves or a third person against an imminent, unprivileged battery or assault.
- Retaliation Prohibited: Force can only be used to thwart an active or imminent threat; force used after the danger has passed constitutes an actionable battery.
- Deadly Force: Permitted only when the actor reasonably believes they or a third party is facing imminent death or serious bodily harm.
3. Defense of Property & The Katko Doctrine
An owner or possessor of real or personal property may use reasonable non-deadly force to prevent an unlawful intrusion upon or dispossession of property.
[!CAUTION] Landmark Precedent — Katko v. Briney, 183 N.W.2d 657 (Iowa 1971): Landowners set a spring-gun trap (a 20-gauge shotgun rigged to fire upon opening a bedroom door) inside an unoccupied, boarded-up farmhouse to deter thieves. A trespasser broke in to steal antique mason jars, opened the door, and was struck in the legs by buckshot, suffering permanent disability. The Iowa Supreme Court held that the law places a higher value on human safety and life than on rights in property. Landowners cannot use deadly force or mechanical devices calculated to inflict death or serious bodily harm to protect unoccupied property against trespassers.
4. Necessity: Public vs. Private Necessity
The defense of necessity privileges an actor to enter real property or interfere with chattels to avoid an imminent public or private catastrophe:
- Public Necessity (Absolute Privilege): An actor destroys or uses property to avert an imminent disaster affecting the public at large (e.g., dynamiting private buildings to create a firebreak halting a conflagration, or destroying contaminated livestock to stop an epidemic). Public necessity is an absolute privilege: the actor is completely immune from liability and pays NO damages for the destroyed property.
- Private Necessity (Qualified Privilege, Vincent v. Lake Erie Transportation Co., 124 N.W. 221 (Minn. 1910)): An actor enters another's property or uses chattels to preserve their own life, vessel, or property from imminent destruction (e.g., a boat captain mooring to a private dock during a sudden, violent gale). Private necessity is a qualified privilege:
- The landowner has no legal right to eject the actor (doing so is an actionable battery/trespass);
- However, the actor MUST pay for all actual physical damage caused to the landowner's property.
5. Defamation & Invasion of Privacy
1. Common Law Defamation
Defamation is an unprivileged false statement of fact that harms the reputation of the plaintiff in the community. The prima facie elements are:
- A false and defamatory statement of fact (tending to lower the plaintiff in the estimation of the community or deter third persons from associating with them);
- Of and concerning the plaintiff (identifying the plaintiff to reasonable listeners);
- Publication to a third party who understands its defamatory meaning; and
- Damages.
- Libel vs. Slander:
- Libel: Defamation embodied in written, printed, broadcast (television/radio), or permanent digital form. General damages are presumed by law; the plaintiff does not need to prove specific economic loss.
- Slander: Spoken, oral, or transitory defamation. The plaintiff must prove special damages (actual out-of-pocket economic harm) to maintain an action, UNLESS the statement constitutes Slander Per Se.
- The Four Slander Per Se Categories (Damages Presumed):
- Statements alleging commission of a crime of moral turpitude or serious criminal infamy;
- Statements asserting the plaintiff suffers from a loathsome communicable disease (historically leprosy or active venereal disease);
- Statements adversely reflecting on the plaintiff's fitness or ability in their business, trade, or profession; or
- Statements alleging serious sexual misconduct or unchastity.
2. Constitutional Defamation Standards: First Amendment Limits
Under common law, defamation was a strict liability tort. However, the United States Supreme Court recognized that the First Amendment requires a showing of fault:
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| Constitutional Fault Standards in Defamation |
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| Plaintiff Category | Required Fault Standard | Controlling Landmark Precedent |
+--------------------------+-----------------------------------+------------------------------------+
| Public Official or | ACTUAL MALICE: Knowledge of | New York Times Co. v. Sullivan, |
| Public Figure | falsity OR reckless disregard of | 376 U.S. 254 (1964) |
| | whether statement was false. | (Standard proven by C&C evidence). |
+--------------------------+-----------------------------------+------------------------------------+
| Private Individual | NEGLIGENCE: At least ordinary | Gertz v. Robert Welch, Inc., |
| (Matter of Public Concern| negligence as to truth or falsity | 418 U.S. 323 (1974) |
| | to recover actual damages. | (Actual malice required for punitives).|
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- Defenses and Privileges:
- Truth: Complete, absolute defense to civil defamation.
- Absolute Privilege: Statements made by judges, attorneys, witnesses, and jurors in the course of judicial proceedings; statements made by legislators on the floor of legislative debates; statements made by executive officials within scope of duties; and communications between spouses.
- Qualified (Conditional) Privilege: Statements made in good faith on matters of mutual legitimate interest (e.g., employment reference letters, credit bureau reports, reporting crimes to police). A qualified privilege is destroyed if the speaker acts with actual malice or excessively publishes the statement.
3. The Four Invasion of Privacy Torts (Restatement (Second) of Torts § 652A)
- Intrusion Upon Seclusion: Intentional physical, electronic, or visual intrusion into the private affairs or seclusion of the plaintiff that would be highly offensive to a reasonable person (e.g., wiretapping private bedrooms, planting hidden cameras).
- Public Disclosure of Private Facts: Widespread public disclosure of private, non-public facts regarding the plaintiff's personal life that would be highly offensive to a reasonable person and not of legitimate public concern / newsworthiness (e.g., publishing medical records or intimate financial debts).
- False Light: Widespread publicity placing the plaintiff before the public in a false light that would be highly offensive to a reasonable person (requires constitutional actual malice if on a matter of public interest).
- Commercial Appropriation: The unauthorized commercial use of the plaintiff's name, image, voice, or likeness for commercial advertising or financial gain.
6. Common Law Strict Liability
Strict liability imposes legal responsibility without regard to fault, intent, or negligence. The law recognizes strict liability in two core common law areas:
1. Abnormally Dangerous Activities
Originating in the English decision Rylands v. Fletcher, L.R. 3 H.L. 330 (1868) (where water from a mill owner's reservoir broke through abandoned coal shafts and flooded an adjacent mine), strict liability applies to activities that are inherently dangerous. Under Restatement (Second) of Torts § 520, courts evaluate six factors:
- Existence of a high degree of risk of some harm to persons, land, or chattels;
- Likelihood that the harm that results from it will be great;
- Inability to eliminate the risk by the exercise of reasonable care;
- Extent to which the activity is not a matter of common usage;
- Inappropriateness of the activity to the place where it is carried on; and
- Extent to which its value to the community is outweighed by its dangerous attributes.
- Standard Applications: Commercial blasting and demolition with high explosives, storage of massive quantities of toxic chemicals, crop dusting with dangerous pesticides, and oil well drilling in residential zones.
2. Animals
- Wild Animals: Possessors of wild animals (lions, bears, venomous snakes) are strictly liable for injuries caused by the dangerous propensities characteristic of that species, even if the owner exercised utmost care in confinement.
- Domestic Animals: Owners of domestic animals (dogs, cats, horses) are generally liable only for negligence, UNLESS the owner had scienter (prior knowledge that the specific animal possessed dangerous propensities abnormal to its breed—the common law "one-bite rule"). Many states have enacted strict dog-bite statutes eliminating the requirement of prior knowledge.
7. Strict Products Liability
Section 402A of the Restatement (Second) of Torts
In modern American civil practice, the vast majority of personal injuries caused by defective commercial products are litigated under Strict Products Liability, codified in Restatement (Second) of Torts § 402A:
"One who sells any product in a defective condition unreasonably dangerous to the user or consumer or to his property is subject to liability for physical harm thereby caused to the ultimate user or consumer, or to his property, if: (a) the seller is engaged in the business of selling such a product, and (b) it is expected to and does reach the user or consumer without substantial change in the condition in which it is sold."
Core Pillars of Strict Products Liability
- Commercial Merchant Seller: Strict liability applies to all commercial sellers in the product's distributive stream (manufacturers, component-part suppliers, wholesalers, distributors, and retail merchants). It does not apply to occasional or private sellers (e.g., an accountant selling a used lawnmower at a garage sale).
- Unreasonably Dangerous Defect: The product must be defective and unreasonably dangerous at the time it left the seller's control.
- Privity of Contract Abolished: Under the landmark doctrine of MacPherson v. Buick Motor Co., 217 N.Y. 382 (1916), lack of contractual privity is no defense. Users, purchasers, passengers, and even innocent bystanders (pedestrians struck by a car with defective brakes) can recover.
- The Economic Loss Rule: Strict products liability compensates for physical bodily injury and damage to property other than the product itself. Pure economic loss (e.g., the product merely breaks down or fails to perform economically) must be pursued under contract and UCC warranty law.
The Three Categories of Product Defects
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| The Three Categories of Product Defects |
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| Defect Category | Legal Definition & Evidentiary Test | Representative Example |
+-------------------+-------------------------------------+-----------------------------------------+
| Manufacturing | The unit departs from its intended | A car rolls off assembly line with |
| Defect | design specifications and differs | missing brake pin; departs from all |
| | from all other identical units. | other identical units in product run. |
+-------------------+-------------------------------------+-----------------------------------------+
| Design | The entire product line is | Fuel tank placed behind rear axle |
| Defect | unreasonably dangerous. Evaluated | without protective shield; explodes upon|
| | under Consumer Expectation Test or | foreseeable low-speed rear impact |
| | Risk-Utility Test (RAD required). | (Ford Pinto case). |
+-------------------+-------------------------------------+-----------------------------------------+
| Inadequate | Foreseeable risks could have been | Prescription drug fails to warn doctors |
| Warnings / Failure| eliminated by reasonable warnings or| of known stroke risks; lack of child |
| to Warn | instructions; learned intermediary. | safety cap warnings on toxic solvents. |
+---------------------------------------------------------------------------------------------------+
- Tests for Design Defects:
- Consumer Expectation Test: The product is defective if it fails to perform as safely as an ordinary consumer would reasonably expect when used in an intended or reasonably foreseeable manner.
- Risk-Utility Test: The product is defective if the magnitude of danger inherent in the design outweighs the financial and operational burden of adopting an alternative design. The plaintiff must establish that a Reasonable Alternative Design (RAD) was technologically and economically feasible.
- The Learned Intermediary Doctrine: In pharmaceutical litigation, manufacturers of prescription drugs fulfill their duty to warn by providing adequate, comprehensive warnings to the prescribing physician (the "learned intermediary"), rather than directly to the ultimate patient.
Defenses to Strict Products Liability
- Unforeseeable Product Misuse: If a consumer uses a product in a bizarre, unforeseeable manner (e.g., using a rotary power saw as a hedge trimmer or dental tool), the manufacturer is not liable. However, foreseeable misuses must be guarded against by safe design or adequate warnings (e.g., standing on the top step of a ladder marked "Do Not Step").
- Substantial Post-Sale Alteration: The manufacturer is relieved of strict liability if the product was substantially modified or altered after leaving its control, and that alteration caused the failure (e.g., removing factory-installed blade guards on industrial stamping machinery).
- Comparative Fault: Modern jurisdictions apply comparative fault to strict products liability, reducing the plaintiff's recovery if their own negligence or unreasonable encounter of a known danger contributed to their injury.
During a contentious meeting in a law firm conference room, an attorney furiously throws a heavy marble paperweight at a paralegal's head. The paralegal ducks under the table, and the paperweight misses completely. However, the paperweight flies through an open doorway into the reception area and strikes an unsuspecting delivery courier on the shoulder, fracturing the courier's collarbone. The attorney was completely unaware that the courier was in the hallway and harbored no animosity toward the courier. Under intentional tort principles, for what tort is the attorney legally liable to the delivery courier?
An investigative journalist publishes a front-page article in a major metropolitan newspaper falsely accusing the city's elected district attorney of accepting illicit bribes from criminal syndicates to dismiss pending felony indictments. The journalist received the tip from an anonymous phone call and printed the allegations immediately without reviewing the court docket, examining prosecutorial files, or seeking comment from the district attorney or public integrity investigators. The district attorney files a civil defamation lawsuit against the newspaper. Under the First Amendment constitutional framework governing defamation, what standard of fault must the district attorney prove to recover compensatory damages?
A homeowner purchases a brand-new electric pressure washer from a commercial retail hardware store. The pressure washer was manufactured by a multinational power equipment corporation. During the homeowner's first routine use, an electrical safety ground wire detached due to a missing solder joint that was inadvertently omitted during manufacturing on the assembly line, causing an intense electrical surge that severely shocked and burned the homeowner. The retail hardware store received the boxed pressure washer from the manufacturer and sold it to the homeowner in its original factory-sealed container without opening or inspecting it. If the homeowner files a strict products liability lawsuit against the retail hardware store under Restatement (Second) of Torts § 402A, what is the store's legal liability?