I started to write this as a response to comments at the end of the "Finding a Left Tackle" Fan Post.  Specifically, I wanted to investigate Bill Polian's much-discussed admission that scouting offensive linemen may be his biggest weakness as a talent evaluator, and how this relates to the the lack of a true franchise left tackle at the moment.  After the jump, I've listed the current NFL pass-blocking left tackles who would potentially be an improvement over Charlie Johnson at the position (list is informed by Scouts, Inc.'s ratings before 2009 season), where in the draft each was chosen, and who the Colts selected in the relevant picks of the same year.  Take a look, and see if you feel the same way I do--namely, that though Polian has misfired in a few places, he hasn't had much room for error considering where the Colts' draft picks have fallen in the past decade.

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