A friend who was approximately my age dropped off a box of books, which she had kept from her pre-school age childhood, for my daughter when at the same age.

One night my daughter picked out a book for her bedtime story and we layed down for a read.

The book was illustrated with a cartoon like characters of fish. When turning to a new page it was like someone had spiked my drink with an hallucinogen. A smiling fish was looking from the page at me with a 3d feel about it. More like an animated cartoon than a drawing on a page. The image seemed incredibly familiar. It then came to me that a copy of the same book had belonged to me as a child and the fish was being seen as the image taken from the vault of my ancient memories and was being seen as when the memory had been constructed in my early childhood.

It was a rare and powerful trick of perception.