Dutret sure uses the word "you" a lot.
He can't mean me when he says "you."
He must mean himself.
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Y'know, when we don't know something, we don't know we don't know it.
We think we know everything.
At one time I thought I knew everything about sex.
Gosh, I had that wrong.
So, when I think I know everything, and someone comes along who knows something I don't know, I could easily figure the thing that person thinks he knows doesn't even exist, because it doesn't exist in my experience.
With all respect, dutret might consider telling us more about what HE can't do with a fixed gear bike, and how a fixed gear bike limits HIM.