I once heard a teacher describe the way in which older children apply the benefit of experience to their lessons, allowing them to understand what was said, even if they didn’t hear every word. I recently stumbled upon an example. I knew what the sign said even though more than half of it was missing. This made me wonder about the myriad of observations we make in a single day. Regardless of how many times we get it right, how many times do we guess incorrectly, and what are the consequences of that?