With all due respect to the immortal Scott Alexander, I think he’s getting the moral deeply wrong when he characterizes category boundaries as value-dependent (although I agree that the ancient Hebrews had good reason to group dolphins and fish under their category dag, given their state of knowledge). For what I think the correct theory looks like (with a focus on dolphins), see “Where to Draw the Boundaries?”.
With all due respect to the immortal Scott Alexander, I think he’s getting the moral deeply wrong when he characterizes category boundaries as value-dependent (although I agree that the ancient Hebrews had good reason to group dolphins and fish under their category dag, given their state of knowledge). For what I think the correct theory looks like (with a focus on dolphins), see “Where to Draw the Boundaries?”.