Is thinking just measuring and comparing?

A few years ago, I listened to a dharma talk given by Ajahn Succito. In it, he said that we can think of the mind as having three aspects to it: awareness, feeling, and thinking (thinking includes memory ability). And I think that it was in the same talk where he casually threw out this statement: *Thinking is basically just measuring and comparing.* It's a rather humbling statement, isn't it? He didn't expand on the statement, so it comes back to me every once in a while, and I wonder: Can it really be that simple? I don't know, but it does seem right to me for some reason. Not sure it matters much, but I do think he included the word "basically", as I quoted above. What do you think? Is there anything important missing from his statement?