Michael Shermer argues that science can determine many of our moral values. Morality is aimed at protecting certain human desires, like avoidance of harm (e.g. torture, slavery). Science helps us determine what these desires are and how to best achieve them.
on-humans.podcastpage.ioSubmitted by Ma3Ke4Li3 t3_ynt30e in philosophy
eliyah23rd t1_ivas7n2 wrote
The following is an example for an argument for a moral claim.
Value: All random killing is wrong
Fact: X is a random killing
Moral claim: X is wrong
Science can provide insight into the Fact clause here. Therefore, Science helps us determine the claim. However, Science cannot provide justification for the Value clause.
Shermer makes the following assertions in the interview (roughly).
"If you want to know if something is wrong, ask the people". - This just shows what their preference is. It does not entail anything beyond their preference.
"If it is right for you, it is right for everybody". - While most people today would wholeheartedly agree, this maxim too is a value statement. It could be seen as a version of Kant's Categorical Imperative, but, it is (arguably) an axiom rather than anything independently supported by either Reason or Science.
The best understanding I can give to Shermer is that morality is whatever people prefer. Perhaps that is the best we can do, but it is deflationary of morality. If true, morality is not a useful concept. There are only subjective preferences. It also does not solve the problem of how to aggregate opposing preferences.