[lukebitts]

That’s not true at all. If something is a waste but doesn’t meaningfully change yours odds of suvival, “evolution” won’t care

[xvilka]

Out there food and energy are often scarce. Evolution does care about efficiency in that particular case a lot. True, there are ecosystems with plenty of free food but they are rarity.

[jacquesm]

Evolution doesn't care about anything.