My problem with some stat-based beliefs is the portrayal of them as fact by many. There are times that the statheads are a bit careless and portray statistical findings as facts. Other times, the gurus word things quite carefully and the reader mistakenly infers they're portraying the findings as fact. The reality is that stats don't really prove or disprove anything. They demonstrate, don't demonstrate, support, strongly support, don't support, correlate, correlate strongly, don't correlate, show significance, don't show significance, etc. If you played the same exact lineup for 120 games and magically started the season over and played them again for 120 games you would get significantly different stats each time. I remember Russ running a simulation that covered 10,000 games. He qualified his findings by saying that 1,000,000 games would have been better and that the reason for sticking to 10,000 was to save time. As far as lineups go, the way I understand it is that there isn't going to be a lot of difference between reasonably constructed lineups. Flip-flopping Braun and Fielder isn't going to mean much, for instance. A full season with poor hitter at the top of the order rather than the bottom could mean a couple of wins. A lineup with players in ascending order of OPS vs. a fully optimized lineup could mean a difference of several wins.