What makes a chess expert? Or an expert in any field, for that
matter? Is it talent, or hard work, or what combination of both?
Fascinating article from the magazine "Scientific American", uses chess
as it's main, but not only, focus to answer this question. It's at
http://www.sciam.com/print_version.cfm?articleID=00010347-101C-14C1-
8F9E83414B7F4945 .
-Randy