I got asked that question out of the blue.

I was perplexed, really. "Of course I could close my eyes and see an apple spinning," was my first thought. Of course, I closed my eyes, and at first, I struggled; all I saw was black.

I was getting concerned because what do you mean? I know what an apple looks like, it's red, green, or yellow, its shape is unique, something I see almost every day.

Yet nothing