Why did the chicken cross the road?

To get to his zettelkasten on the other side!

But when he got there, he realized he had forgotten the slip of paper with his perfect evergreen note. So the chicken crossed the road once again to retrieve it. But almost as if it were a jokerzettel, on the way back, a gust of wind blew the slip right out of the chicken's beak!

The chicken tried to catch the runaway slip, but it kept evading him. He chased that slip all over the farm--through the pig sty, over fences, around the grain silo.

Finally, exhausted but triumphant, the chicken caught the slip and carefully filed it away.

Moral of the story: Don't count your slips before they're indexed!

Q: Why did the zettelkasten cross the road?

A: It didn't because Barbara Tuchman, Nicholas Luhmann, Jacques Goutor, Johannes Erich Heyde, and Keith Thomas all recommend only writing on one side.