Seeing Further: The Story of Science and the Royal Society

by Bill Bryson

We must add ‘in a previously specified direction’ because, with hindsight, every random combination can be made to seem as improbable as any other. How astounding that, of all the blades of grass on the golf course, the ball landed on this particular blade, and no other! The reason a hole-in-one is so rare is that the hole is specified in advance as the target.

We must add also a single word: "Viable"