[bicycletricycle]

Remember when we all knew 700x20 tires at 130 psi was the fastest? Apparently now we aren't even sure if 35's are any slower than 28's.

Remember all those amazing theories about crank length being a percentage of leg length yielding 200mm plus cranks for tall people? Nope, everyone on 165's now.

Knee over center of axle?
axle centered under ball of foot?
easy gears are for unfit amateurs?
Wide rims are for mountain bikes?
hookless are better than hooked rims?
Lightweight bikes make you go faster ?
etc, etc, etc

So, how much of current trendy cycling expertise is also BS?