I think I read that colic has to do with formula feeding? Apparently this sort of crying is not present in breastfed babies, it has to do with discomfort due to excessive gas generated when digesting the infant formula.
Babies certainly did not evolve to waste valuable time and resources on crying nonstop for no good reason, they likely do so only because something is not quite right. A more optimistic take is that they do it to develop the pipes, and the nonstop crying will pay off later with a great voice.
Babies certainly did not evolve to waste valuable time and resources on crying nonstop for no good reason, they likely do so only because something is not quite right. A more optimistic take is that they do it to develop the pipes, and the nonstop crying will pay off later with a great voice.