Originally Posted by qw1a

You clearly do not understand the point of training on a fixed-gear bike - it's all about the stroke. Riding on a fixed gear bike (with proper gearing) forces you to develop a smooth, controlled, circular stroke that later will transfer well to geared riding.

I own a track-bike (among a few other) and have to admit that riding on track is a major, major training aid.

PS. I did see someone argue that "on track, they do not allow geared bikes because they do not want people to accelerate too fast". Have you ever actually see a good track sprinter and how they accelerate?