Why did the artist fail his memory test?

He kept drawing a blank.

Did You Know?

"Drawing a blank" means forgetting something, but for an artist, "drawing" literally means creating art on a blank surface! The human brain can store an estimated 2.5 petabytes of information—that's roughly 3 million hours of TV shows. Artists often rely on visual memory more than verbal memory, which is why many can recreate scenes from memory with remarkable accuracy.