Regan

Regan’s Theory: IVE & SLP & RV

Inherent Value Egalitarianism: Inherent value does not come in degrees (i.e., any two inherently valuable things are equally inherently valuable).

Subject-of-a-Life Principle (SLP): If x is the subject of a life, then x has inherent value.

Respect View (RV): An act is morally right iff it respects the inherent value of all creatures affected by the act.

RBAU: A is morally right iff (i) A respects the rights of others to the greatest degree possible and (ii) among A's alternatives that respects the rights of others to the greatest degree possible, A maximizes hedonic utility.

Warren

Be able to present and then evaluate Warren's central objections to Regan' s Theory.

D1. x has “strong” rights =df. x cannot be used as a mere means, no matter the circumstances.

D2. x has “weak” rights =df. x can be used as a mere means only if there are good or compelling reasons to do so.

Weak Animal Rights Theory (WART): WART1 & WART2 & WART3

WART1. A being has strong rights iff it is capable of altering its behavior on the basis of reasoned argument.

WART2. A being has weak rights iff it is sentient but unable to alter its behavior on the basis of reasoned argument.

WART3. An act is morally right iff it respects the strong and weak rights of all creatures affected by the act.