Introduction to Philosophical Arguments and Methods

Overview of Philosophical Chapters and Perspectives

The primary goal of the text is to introduce the topics and methods of philosophy through arguments for controversial conclusions.
Arguments are presented "in character," representing specific perspectives that are not necessarily the author's own.
Readers are encouraged to question claims and decide if the reasoning provided is convincing rather than expecting a single coherent whole from the book.

Chapter Descriptions

Chapter 1: Can God Allow Suffering?: This chapter argues that an all-powerful and morally perfect God would not allow the suffering found in the world and therefore must not exist. It addresses explanations for suffering, such as its role in appreciating good, character building, free will, or the existence of hidden divine reasons.
Chapter 2: Why You Should Bet on God: This chapter argues that believing in God is in one's best interest to secure an eternity in heaven without risking comparable value. It addresses objections regarding the low probability of God's existence, the nature of belief, and the inability to change beliefs at will.
Chapter 3: What Makes You You: This chapter explores personal identity. It rejects the "same-body" theory based on arguments regarding conjoined twins and body-swapping. It also rejects psychological definitions of identity based on "fission" cases where mental life is transferred to multiple bodies.
Chapter 4: Don't Fear the Reaper: This chapter argues that death is not bad because there are no painful sensations once dead, assuming humans are physical organisms that cease to be conscious at death. Consequently, fearing death is irrational. It addresses the "deprivation" account of death's badness.
Chapter 5: No Freedom: This chapter offers two arguments against free will: first, that actions are determined by the strength of desires (outside our control), and second, that actions follow exceptionless deterministic laws of nature. It also argues that if laws were random/undetermined, actions would still not be free.
Chapter 6: You Know Nothing: This chapter presents two skeptical conclusions: we cannot know the future because we lack reason to assume it will resemble the past, and we cannot know the present state of the world because we cannot rule out being in a vivid dream.
Chapter 7: Against Prisons and Taxes: This chapter argues that taxation and imprisonment are wrong, equating government actions to a vigilante robbing neighbors to fund a private prison. It examines the "social contract" and the idea of tacit consent.
Chapter 8: The Ethics of Abortion: This chapter analyzes various pro-life and pro-choice arguments. It concludes that criteria like DNA, potentiality, or consciousness are insufficient and that a "right to life" does not imply a right to use a mother's womb. It ultimately argues abortion is immoral because it deprives the fetus of a "valuable future," but suggests it should remain legal.
Chapter 9: Eating Animals: This chapter defends the view that eating factory-farmed meat is immoral. It counters arguments based on tradition, necessity, or nature by comparing the treatment of livestock to the hypothetical raising and slaughtering of puppies.
Chapter 10: What Makes Things Right: This chapter defends utilitarianism, the theory that morality depends entirely on the extent to which an action increases global happiness. It addresses the objection of killing one person to save five and considers "trolley cases."
Appendix A: Logic: Explains the concept of validity in arguments.
Appendix B: Writing: Provides a model for philosophical papers focusing on clarity, charity to opposing views, and avoiding plagiarism.
Appendix C: Theses and Arguments: A collection of the book's key arguments.

The Elements of Arguments

Argument Definition: A sequence of claims consisting of premises, a conclusion, and potentially subconclusions.
Conclusion: The ultimate claim the argument attempts to establish.
Premise: Assumptions used as reasons to accept the conclusion.
Subconclusion: A claim supported by premises that helps establish the final conclusion.

Example: Against Fearing Death (FD)

(FD1): You cease to be conscious when you die (Premise).
(FD2): If you cease to be conscious when you die, then being dead isn't bad for you (Premise).
(FD3): So, being dead isn't bad for you (Subconclusion - inferred from FD1 and FD2).
(FD4): If being dead isn't bad for you, then you shouldn't fear death (Premise).
(FD5): So, you shouldn't fear death (Final Conclusion).

Identifying Arguments in Text

In labeled/indented arguments: The conclusion is the final claim. Subconclusions begin with "So." Any claim not beginning with "So" is a premise.
In paragraph form: Context and logic must be used to identify components, as conclusions and subconclusions may appear anywhere and often lack marker words.
Logical Consequence: In logical arguments, if the premises are true, the conclusion must be true. To reject the conclusion, one must find a premise to deny.

Premises and Conditionals

Nature of Premises: Premises can be speculative, conceptual truths, factual statements ( $6$ -week-old embryos), moral judgments, or matters of opinion. Even false statements ( $1+1=3$ ) can serve as premises, though they weaken the argument's persuasive power.
Conditionals: Statements of the form "if… then…". - Antecedent: The part following "if." - Consequent: The part following "then." - Example: In "If you cease to be conscious when you die (antecedent) then being dead is not bad for you (consequent)," the conditional affirms a link between the two claims. - Other forms include "…only if…" and "…if…".

Example: The Drinking Age Argument (DK)

(DK1): Kristina is $20$ years old.
(DK2): If Kristina is $20$ years old, then Kristina is not allowed to buy alcohol in the US.
(DK3): So, Kristina is not allowed to buy alcohol in the US.
One can agree with the conditional (DK2) while disagreeing with the antecedent (DK1) or consequent (DK3) if they believe Kristina's age is different (e.g., $22$ ). Denial of the conditional would require believing the drinking age laws are different (e.g., $18$ ).

Common Argumentative Strategies

Defending a Premise

An argument can be used to support a premise of a larger argument.
The Brain Death Argument (BD): - (BD1): Your brain stops working when you die. - (BD2): If your brain stops working when you die, then you cease to be conscious when you die. - (FD1): So, you cease to be conscious when you die.
Here, FD1 is the conclusion of the BD argument but a premise in the FD argument.

Challenging an Argument

Produce an argument for the opposite conclusion: - The Uncertain Fate Argument (UF): - (UF1) You don't know what happens after death; (UF2) If you don't know, you should fear death; (UF3) So, you should fear death (denies FD5).
Produce an argument against a premise: - The Afterlife Argument (AF): - (AF1) You go to heaven/hell; (AF2) If so, you don't cease to be conscious; (AF3) So, you don't cease to be conscious (denies premise FD1).

Counterexamples

General Claims: Claims asserting things are "always" or "never" a certain way are vulnerable to counterexamples.
The Beating Heart Argument (BH): (BH2) states it is always immoral to kill something with a beating heart. Counterexample: A worm has a heart, but killing it is not generally considered immoral, formulated as The Worm Argument (WA).
The Consciousness Argument (CN): (CN2) states it is never wrong to kill something that isn't conscious. Counterexample: A temporarily anesthetized person is unconscious, but killing them is wrong, formulated as The Temporary Anesthesia Argument (TA).
Necessary and Sufficient Conditions: The phrase "if and only if" denotes both. - If $X$ , then $Y$ ( $X$ is sufficient for $Y$ ; the "always" claim). - Only if $X$ , then $Y$ ( $X$ is necessary for $Y$ ; the "never without" claim).
Example (HD): "Something is bad for you if and only if it's painful." This can be challenged by finding something painful that isn't bad, or something bad that isn't painful.

Argument by Analogy

Logic: If Action A and Action B have no morally relevant differences, and Action A is wrong, then Action B is wrong.
The VIGILANTE Case: Jasmine kidnaps con-men and extorts neighbors to pay for their care and a community gym.
Against Taxation and Imprisonment (TX): - (TX1) No morally relevant difference between A and B, and A is wrong, involves B being wrong. - (TX2) Jasmine's extortion/kidnapping is wrong. - (TX3) No morally relevant difference between Jasmine's actions and government taxation/imprisonment. - (TX4) So, government taxation/imprisonment is wrong.
Objectors must identify a specific "morally relevant difference" to break the analogy.

Thought Experiments

Definition: Fictional scenarios used to elicit intuitive reactions to defend or challenge arguments.
HYPNOTIC DECISION: Used to challenge the idea that doing what you decided to do makes an action free (The Argument for Freedom (FR)). - Tia hypnotizes Colton to tackle Kabir when Kabir yells "Freeze!". Colton "decides" to tackle Kabir and does so. - Intuition: Colton did not act out of free will, serving as a counterexample to (FR2).
Variables in Thought Experiments: Changing details (like in HYPNOTIC BREAK where control is lost but the decision remains) creates a different case. A single counterexample (the original case) is enough to falsify a principle.
The Importance of "Boring" Details: In TROLLEY LEVER, making characters unremarkable (not a brother or a cancer researcher) ensures the experiment focuses specifically on the moral principle being tested (killing one to save five) without distraction.
Essences vs. Generalizations: Unlike science (e.g., zoologists noting that zebras "normally" have stripes), philosophers seek exceptionless principles. A definition of a "bachelor" as "unmarried man under $80$ feet tall" is false because it is possible to have a $90$ -foot-tall bachelor, even if no actual one exists. Philosophers aim for definitive, exceptionless truths to ensure their principles have "bite."

What is Philosophy?

Defining the Subject: Traditional definitions (the study of life's fundamental questions) fail because they are neither necessary nor sufficient (e.g., taxes aren't fundamental; extraterrestrial life is fundamental but scientific).
Defining the Method: Philosophy is characterized by answering questions through careful thinking and rational argumentation rather than empirical experimentation alone.
Perversely Strict Scrutiny: As described by Delia Graff Fara, philosophy involves investigating our conceptions of the world by subjecting beliefs to extreme scrutiny.
Philosophy as "Thinking in Slow Motion": Breaking ideas into component parts, assessing premises individually, and focusing on the smallest details to find clarity.