I haven’t finished the episode yet; but, this one might be the most entertaining Potluck yet. How long has this been sitting waiting for release.
Thankfully, I had just finished mowing the lawn when the topic of third legs came up! Otherwise, I might have injured myself as my not so pure mind wandered along with the discussion.
@Schils - glad to hear you found it so entertaining, and glad there was no injury involved! Sounds like the next time we ramble into those types of tangents we should put a “do not operate heavy machinery while listening” disclaimer at the front end 
I found this topic of gear innovation fascinating.
I was surprised to hear the strong belief that cycling should be legs vs legs only. Bike racing, being the racing of bikes, unlike running and swimming etc (which don’t have a strong mechanical component), involves getting a bike from point A to point B as fast as possible. From when I first started cycling and chasing Strava segments to now racing for the last six years, optimising my bike for efficiency gains (be it aerodynamic, drivetrain friction, rolling resistance, etc) has been a significant part of my effort to improve my performance. Many I race with and against feel the same way. I seem to do this part better, though, as I am regularly beating others in time trials yet putting out less power (like Trevor’s anecdote of racing against Neal Henderson).
I don’t exactly understand why we would want to remove this aspect. It is what makes cycling so appealing (to me at least). Without it, I wouldn’t be cycling. One has to decide: do I spend two hours training my body, or two hours doing Chung Virtual Elevation testing of two of my positions on the bike to see which is more aerodynamic, or two hours finding out which is currently the best chain wax? This is what makes cycling training interesting—the strategy in how best to invest your time to prepare you and your bike optimally.
I have a bias, of course, as my genetics aren’t great, so I need to try and level the playing field with some smart preparation. Looking forward to this discussion.