We descended from apes. Before we made the jump, apes presumably still felt pain and pleasure. They just didn’t have the same degree of sophistication when maki

We descended from apes. Before we made the jump, apes presumably still felt pain and pleasure. They just didn’t have the same degree of sophistication when making sense of these sensations. Our understanding of shared traits among various animal types makes it possible to extrapolate reasonably that what these animals experience is not dissimilar to what we experience in terms of raw sensations.