Murray,

thanks for the book hint. I have a premonition that I'm going to like it.

If any of you who believe that your premonitions quite often come true is empirically minded make the following sobering experiment: Write down your premonitions as exactly as possible before checking whether they are right or wrong. After some months count your hits and your false alarms. Counting data in written material is extremely helpful against selective forgetting. Once you have done that experiment I'm convinced you will never again claim that premonitions are more often true than not.

Wolfgang