Thinking about Things

In the blink of an eye, I can redirect my thought from London to Austin, from apples to unicorns, from former president Obama to the mythical flying horse, Pegasus.How is this possible? How can we think about things that do not exist, like unicorns and Pegasus? They are not there to be thought about, yet we think about them just as easily as we think about things that do exist.Thinking About Thin...