Best effort is well-defined only for a fixed bandwidth of opportunity. However, you can always increase your bandwidth of available opportunity. That's what op

Best effort is well-defined only for a fixed bandwidth of opportunity. However, you can always increase your bandwidth of available opportunity. That's what opening yourself up to luck does for you. The author's coffee-buying policy is an example of a technique that increases available opportunity. I find this similar to the Zen notion of Beginner's Mind: https://en.wikipedia.org/wiki/Shoshin https://en.wikipedia.org/wiki/Shoshin