one of my colleagues opens a paper about relative speed of adaptation with an old joke.

Two sleeping hunters, Abe and Bob, are awakened by the sound of a bear rummaging through their cooler. Abe starts putting on his shoes as fast as possible. "That's pretty stupid," Bob says, "you can't outrun a bear." "I don't need to outrun the bear," Abe replies, "I just have to outrun you."