📖 Chapter 1 · Complete Study Guide

Moral Systems,
Ethical Concepts
& Theories

Every concept from the lecture, rebuilt with mnemonics, comparisons, and memory tricks — so the exam feels like a conversation.

01

Morality vs Ethics — What's the Difference?

Foundations
🧠 Memory Hook
Ethics Studies Morality

Morality = the actual rules of conduct a society lives by.
Ethics = the philosophical study of those rules — asking why they exist and whether they're justified.

Think of it this way: Morality is the rulebook. Ethics is the analysis of the rulebook.

📋

What Morality Consists Of

Breakdown
Core Values
Fundamental beliefs — what's truly important
Rules of Conduct
Directives (micro) + Social Policies (macro)
Principles of Evaluation
Justice · Fairness · Respect for others
Grounded in Religion, Law, or Philosophy
The three systems that justify moral rules

Micro-level (directives): Individual rules — "Do not steal", "Do not harm others."

Macro-level (social policies): Societal rules — "Software should be protected", "Privacy should be respected."

02

Four Features of a Moral System

Must Know
🧠 Mnemonic — PIRI
People Inside Reason Impartially

Public · Informal · Rational · Impartial

👁️

Public

Everyone in the society must know what the rules are. No hidden codes.

🤝

Informal

No formal judges or courts. Unlike law, morality has no authoritative enforcers.

🧠

Rational

Based on logical reason accessible to ordinary people — not special or privileged knowledge.

⚖️

Impartial

Rules apply equally to everyone. No favouritism for any group or individual.

03

The 4 Core Ethical Principles

Principles
🧠 Mnemonic — BLAJ
Be Less Autocratic, Judge!

Beneficence · Least Harm · Autonomy · Justice

💚

Beneficence

Do what is right and good. Prioritise doing good — the "do good first" principle.

🩹

Least Harm

When no great option exists, choose the option that harms the fewest people the least.

🗽

Respect for Autonomy

Allow people to make their own decisions about their own lives — they know their lifestyle best.

⚖️

Justice

Actions should be fair to all those involved — no unjust advantages or burdens.

04

What All Ethical Theories Have in Common

Shared Core
🎯

Right Action

They all define what "doing the right thing" means.

🔓

Free Choice

They assume people can make rational decisions of their own free will.

🌍

Human Well-Being

The ultimate goal is to contribute positively to humanity.

📌

Obligations vs Preferences

They separate moral duties from mere personal preferences.

05

The 6 Ethical Theories

Core Content
🧠 Master Mnemonic — remember all 6 theories
Really Determined Dudes Convince Confident Villagers

Relativism (Ethical Relativism) · Divine Command Theory · Deontology (Duty-based) · Consequentialism (Utilitarian) · Contract-based (Social Contract) · Virtue Ethics (Character-based)

🌐

Ethical Relativism

Theory 1

Core claim: There are no universal moral rules. Right and wrong vary by individual or culture — and both can be "correct" simultaneously.

Think of it as: "What's right is whatever you (or your culture) think is right."

It comes in two flavours:

Subjective Relativism

  • Each individual decides right/wrong for themselves.
  • Your approval of X makes X right — for you.
  • Two people can disagree and both be "right."
✗ Not a workable theory

Cultural Relativism

  • Each culture decides right/wrong collectively.
  • What's moral in one country may be immoral in another.
  • Moral guidelines vary by place and time.
✗ Not a workable theory

Advantages of Cultural Relativism

  • Promotes cooperation and mutual respect
  • Enables equality across cultures
  • Preserves human cultural diversity
  • Lets communities build their own moral codes

Disadvantages of Cultural Relativism

  • Fuelled by personal bias
  • Could create social chaos
  • Based on perfection of humanity (unrealistic)
  • Can actually reduce real diversity
Why SR fails: Blurs doing what's right vs doing what you want. Makes moral disagreement impossible. Based on non-reasoning.
Why CR fails: No universal guidelines. Gives tradition more weight than reason or facts. Weak tool for ethical persuasion.
✝️

Divine Command Theory

Theory 2

Core claim: Morality comes from God's commands. What God commands = moral. What God forbids = immoral. Holy books are the guides.

Think of it as: "God's will is the ultimate rulebook."

Advantages

  • God is all-good and all-knowing → perfectly reliable
  • Universal rules that apply to everyone, everywhere, always
  • Commands are completely objective (not opinion-based)
  • Religious texts provide a clear practical guide
  • Obedience is motivated by reward/punishment

Challenges (common critiques)

  • Requires prior acceptance of faith
  • Disagreements between religions on what God commands
  • Euthyphro dilemma: Is it good because God commands it, or does God command it because it's good?
📜

Deontology (Duty-based)

Theory 3

Core claim: Morality is about following duties and rules — not about the outcome. An action is moral if it follows the right rule, regardless of consequences.

Key thinker: Immanuel Kant — "Act only according to rules you'd want universalised."

Memory hook: 🔒 "Duty first, results second." A doctor must tell the truth even if it upsets the patient, because honesty is a duty.

📊

Consequentialism / Utilitarianism

Theory 4

Core claim: The morality of an action is determined entirely by its consequences. The right action produces the greatest good for the greatest number.

Key thinker: John Stuart Mill, Jeremy Bentham.

Memory hook: 📈 "The ends justify the means." Calculate outcomes, pick what maximises happiness for the most people.

🤝

Social Contract Theory

Theory 5

Core claim: Morality arises from agreements people make with each other to live together in society. Rules are valid because we all implicitly or explicitly agree to them.

Key thinkers: Hobbes, Locke, Rousseau.

Memory hook: 📝 "Society is one big contract — we all signed it by living here."

🌟

Virtue Ethics (Character-based)

Theory 6

Core claim: Morality is about who you are, not just what you do. Focus on building virtuous character traits — honesty, courage, compassion — and right actions will follow.

Key thinker: Aristotle.

Memory hook:"Be a good person and good actions come naturally." Instead of rules, ask: "What would a virtuous person do here?"

06

All 6 Theories — Side-by-Side Comparison

Exam Shortcut
Theory Moral Authority Focus Universal Rules? Workable?
Subjective Relativism The individual Personal approval No No
Cultural Relativism The culture/society Cultural norms No No
Divine Command God God's commands Yes Faith-based
Deontology Rational duty Rules & duties Yes Yes
Utilitarianism Consequences Greatest good Contextual Yes
Social Contract Collective agreement Mutual agreement Within society Yes
Virtue Ethics Character traits Who you are Contextual Yes
07

Tricky Distinctions — Deep Dives

Exam Focus
Morality vs Ethics — aren't they the same word? 🤔

Morality is the system itself — the rules, principles, and values a society actually uses to guide behaviour.

Ethics is the academic, philosophical study of that system — questioning whether those rules are justified, rational, and fair.

Analogy: Morality is the game. Ethics is the sports commentator analysing whether the rules of the game make sense.

Subjective Relativism vs Cultural Relativism — what's the key difference? 🌐

Both say there are no universal moral rules. The difference is who decides:

Subjective Relativism: Each individual is the moral authority for themselves. "I approve of X, so X is right — for me."

Cultural Relativism: Each culture or society collectively decides what's moral. "Our culture approves of X, so X is right here."

The critical similarity: both are considered non-workable because they lack universal standards and make ethical debate impossible.

Micro-level vs Macro-level rules — what do they mean? 📏

Micro-level (directives): Rules that guide individual behaviour. Example: "Do not steal." "Do not harm others." These are personal conduct guidelines.

Macro-level (social policies): Rules that guide society as a whole. Example: "Software should be protected." "Privacy should be respected." These become laws, policies, and institutional standards.

Think of it as: micro = personal rules, macro = societal rules.

Why do we even study ethics philosophically? 🎓

The lecture gives five reasons:

1. Critical evaluation — to analyse arguments rigorously rather than accepting them at face value.

2. Support a position — to provide justified reasoning behind a claim or view.

3. Convince others — to persuade people to adopt or reject a position using logical reasoning.

4. Consistency — to ensure our beliefs are logically coherent and don't contradict each other.

5. Meaningful dialogue — to engage in genuine, productive moral conversations.

What are Morality's three justification grounds? ⛪📚⚖️

Moral rules and principles are justified (grounded) in one of three systems:

Religion: Commands from God or sacred texts define what is morally right.

Law: What is legally permitted/prohibited reflects moral expectations of society.

Philosophy (Ethics): Rational reasoning and ethical theories justify moral rules independently of religion or law.

These three are the foundations — everything else builds on top of them.

📊 Chapter at a Glance

4

Features of a moral system (PIRI)

4

Core ethical principles (BLAJ)

6

Ethical theories to master

2

Types of ethical relativism

3

Grounds for moral justification

0

Universal rules in relativism — that's the point!

09

Practice Questions

Self-Test
📝

Q1 — Morality vs. Ethics

A computer science student argues: "Hacking into a company's server to expose poor security is morally justified even if it's illegal." Is this statement making a claim about morality or about ethics? Explain the distinction and then evaluate the claim using one ethical principle from the BLAJ framework.

📝

Q2 — Four Features of a Moral System (PIRI)

A secret code of conduct exists within a government department, known only to senior officials. Which of the four features of a moral system (Public, Informal, Rational, Impartial) does this code fail to satisfy, and why? Could this be considered a legitimate moral system?

📝

Q3 — Subjective vs. Cultural Relativism

Two colleagues disagree about data privacy. Colleague A says: "I personally don't see anything wrong with selling user data — I approve of it." Colleague B says: "In our culture it's normal to share community data openly." Identify which form of ethical relativism each colleague is expressing. Why are both forms considered non-workable as ethical theories?

📝

Q4 — Comparison: Deontology vs. Consequentialism

A software engineer discovers a critical security flaw in a banking app that affects 10,000 users. Disclosing it publicly would immediately protect users but would cause financial harm to the company and potentially lead to the engineer's dismissal.

a) What would a deontologist (Kant) argue the engineer should do, and why?
b) What would a consequentialist (utilitarian) argue, and why?
c) Which theory produces the clearer, more actionable guidance in this case?

📝

Q5 — Virtue Ethics Application

Aristotle's virtue ethics focuses on who you are rather than rules or consequences. A product manager is pressured to ship an app with a known privacy flaw to meet a deadline.

How would a virtue ethicist evaluate this situation? Name two specific virtues relevant here and explain how each applies. Does virtue ethics provide a clear answer about whether to ship or delay?

📝

Q6 — Social Contract Theory

When users agree to a social media platform's Terms of Service without reading them, are they entering a genuine social contract? Using Social Contract Theory (Hobbes, Locke, Rousseau), discuss whether this constitutes a morally binding agreement and what obligations the platform has in return.

📝

Q7 — Theory Identification

Match each statement to the ethical theory it represents (Relativism, Divine Command, Deontology, Utilitarianism, Social Contract, Virtue Ethics):

a) "Lying to protect a friend is acceptable because the outcome prevents greater harm."
b) "Storing user data is wrong because you would not want your own data stored without consent."
c) "Privacy norms differ between cultures, so we can't impose Western standards globally."
d) "A trustworthy engineer would never intentionally introduce vulnerabilities."
e) "We follow cybersecurity laws because society collectively agreed they protect everyone."

📝

Q8 — Micro vs. Macro Moral Rules

Classify each of the following as a micro-level (directive) or macro-level (social policy) moral rule, and explain the basis for your classification:

a) "Do not access another person's computer without permission."
b) "Software companies should be required by law to disclose data breaches within 72 hours."
c) "Do not plagiarize someone else's code and claim it as your own."
d) "Artificial intelligence systems should be developed in a way that respects human autonomy."