To understand consciousness and its evolution, we need to ask the right questions.

Nicholas Humphrey in Seed:

14bi180It all depends on asking the right questions at the outset. I can show what I mean with the example of a well-known visual illusion. Consider what you might want to explain about the experience of looking at the object in the picture to the left (Fig. 1), a solid wooden version of the so-called impossible triangle. Since it is at first sight so surprising and impressive, any of us might very well innocently ask the (bad) question: “How can we explain the existence of this triangle as we perceive it?” Only later—indeed only once we have seen the object from a different viewpoint (Fig. 2), and realized that the “triangle as we perceive it” is an illusion—will it occur to us to ask the (good) question: “How can we explain the fact we have been tricked into perceiving it this way?”

Now, no one wants to think that consciousness is likewise some kind of trick. But let’s nonetheless see where the analogy may lead. The standard philosopher’s example is the case of what it’s like to see red. So, suppose you were looking at a ripe tomato: What might you want to explain about the qualia-rich red sensation that you are experiencing?

More here.