Saw it for my own eyes very good....different until you stand on the closed plane line and the Angle of Approach Procedure...Teddy Ballgame showed me the visual equivalents with two hoops on top of each other..the hitter sees a steeper than normal circle and in relation to his eyes it is a circle that appears to be a straight line out to right field.... if you stood on the 10-5-A plane line you'd say the swing was inside then steep...but standing on the 10-5-E Plane Line..it looks on plane to right field...really cool