how the mind works

Here's a little something I recently discovered about how my mind, at least, functions.

Assume there are two options for a choice I frequently make. Call them A and B, and specify that I always prefer A.

When I'm presented with the choice, I'm always asked, "A or B?" and I reply, "A."

This time, however, I was asked, "B or A?" And I said "B" before immediately correcting myself.

This shows that I've learned to memorize my choice's place in the order rather than internalizing its name. Though I did know what I want, and as soon as I said "B" realized that something was wrong.