This vintage brain teaser posted to Futility Closet uses geometry to illustrate how wealthy individuals can manipulate access to shared resources. Can you solve it? "Suppose there was a pond, around ...

If you visit a zoo, you might be captivated by the animals you see—majestic lions, curious meerkats, soaring birds of prey.

There are few memory effects that are as powerful as this.” Does this mean solving puzzles will improve my memory long-term?