Not sure if they can think abstactly like that, but I used to fish alotttt ... and when you see a trout come within inches of a fly that you know you tied perfectly and refuse it, or follow a spinner for 20 feet and not bite it, you realize they are not totally stupid... so maybe I've been cursed up, down, and sideways and not realised it.. (although i have been bitten if that counts, not by a trout though)

Who is David?