Reading this fine book by Nassim Nicholas Taleb
so one thing I "observed" is that whenver I come into cambridge by train and it is raining, the rain is either on the track before the station, or on the road after the station, but not both.
this is an observation bias - i only notice this as I will probably have my waterproof ccling gear on already if it is both, but have to put it on or take it off if its exclusively one or other. so i only remember the times i have to change gear:-)
bizarely, steven hand recommended this book to me the day it arrived from amazon for me - of course, he probably bought it because of the same publication and reviews as I did so thats not a "coincidence" - its understandable (else how would "charts" ever work:-)