Essentialism and Evolution

Bloom’s idea is that we are all essentialists. That is, we pay special attention to the history of an object – where it has been, what it has touched, and who has touched it. As Bloom explains, we subscribe to “the notion that things have an underlying reality or true nature that one cannot observe directly and it is this hidden nature that really matters.” And, moreover, “the pleasure we get from many things and activities is based in part on what we see as their essences.”

Why are we essentialists?

McNerney: Is there an evolutionary advantage of being an essentialist?
Bloom: I think the case is most obviously made about other people. If I want to safely interact with you, I must be cautious of your history. For example, it is advantageous for me to know how you’ve treated me in the past, who your friends are, who you know and what you know. There is a long list of things that are invisible but are part of you, and they could be important for, say, my survival.

McNerney: So you could say that when we assess others we look at them physically, but we also examine their “resumes,” if you will.
Bloom: Exactly, that’s right. And the same is true with animals. You want to know more than just the physical – the history is important too. For example, is it dangerous? Does it tend to move quickly? Likewise for food, you want to know its history and what it has touched before you eat it.

McNerney: So evolution did not favor people who weren’t able to think as essentialists?
Bloom: Yes, think about what a disadvantage it would be if you only assess things as they are. Here’s the interesting part, you could argue that humans have taken it too far. We are so caught up in history that we collect irrelevant things. We care about the difference between an original and a forgery.

[from http://whywereason.wordpress.com/2011/09/17/the-psychology-of-pleasure-interview-with-paul-bloom/]