On objective morality

On objective morality

Many people believe the notion that morality is objective, derivable from religion like god or reason. Typically many would argue there are inherent things that are good and bad, whether that is wellbeing should be maximized or something like a god given divine law.

However, morality cannot be derived fully from something objective for one important reason:

Hume’s Is ought gap:

On objective morality

Before we get into Hume’s is-ought gap, it is good to know a bit about how deductive reasoning works. Deductive reasoning takes axioms to derive conclusions. What does that mean? Well it works with logical implications. It looks at if P was true, then Q is true. That is a logical implication. And it’s a guaranteed truth. Now nothing tells us if P was true or not. I could say P is “Pigs fly”. Of course we know Pigs don’t fly, so that means whatever argument we made using that axiom P, we shouldn’t accept that argument. Now how is this related to morality? People often blame “cold hearted reason” for people doing immoral acts (like people often using A Modest Proposal). What they don’t realize is that reason isn’t actually to blame. If I derived a conclusion that pig bones must not be very dense off the axiom that pigs fly, then is it reason’s fault that led to such a conclusion? No. It’s just a bad axiom to start off with.

So what is this Is-ought gap? The is ought gap notices that you cannot derive an is statement from an ought statement. Suppose I wanted to convince you to donate money to help homeless people. I could cite some statistics that homeless rates are rising, people are starving on the street. I could mention teenage pregnancy. I could mention all of that statistics. But none of that really implies you must donate. There is no implication at all. An axiom required is that you want to help people in poverty. Without that, none of these fact mean anything. That’s why it make sense to say morality is as subjective as liking different vegetables (just that society puts more emphasis on morals). If I said I loved this certain food because it has broccoli and asparagus in it, many would be repulsed. Why? Because the fact that a food has broccoli or asparagus in it doesn’t say anything about whether it is delicious or not. Now if you like broccoli and asparagus, this argument would work.

In generality, an is statement (fact) cannot imply an ought statement (should).

This statement applies even if someone believes a divine god exist. Let’s suppose for a moment that a god existed. Or some source of morality, telling you how you ought to live. Say that it tells you that you have a moral obligation to do x. Well the first critic is “why ought you do x?” A response might be “Because god commands so and he’s all powerful!” or “You would go to hell!” or “Karma exist so act how you want to be acted upon.” etc. In general, one would say “Because reason y.” Now reason y is proposed as a fact. But the thing is that fact doesn’t imply anything you ought to do. Saying it’s god’s will says nothing about if you ought to do it. Or saying it’s what Allah teaches implies nothing about what you ought to do.

So what now?

Morality is subjective. Doesn’t that mean we can descend into pure anarchy then?

Not quite. Think about every time you have made a moral argument. You use a logical implication statement. Or anytime you needed to apply your morals in a situation. You used a logical I:plication statement. There’s something crucial about a logical implication.

The idea is that our morals should be logically consistent. If you held logically contradicting idea, then morals cannot be applicable. It cannot even be argued at all.

So in a world where morals are subjective, there are wrong moral systems. It is ones in which it is logically incoherent. So if you wanted to demonstrate how someone action is immoral, you need to work within their axiomatic system.

To summarize, because of David Hume, our morals cannot derive from facts. We need to form our moral axioms based on subjective emotion, but derive moral conclusions from logical implications.

On objective morality
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