foldU

This sounds like a really unpleasant shopping experience to me.

The geometric representation of AM/GM is very cool, but the first animation seems wrong to me, it should be varying the value of `b`, not the location of the circle, for it to make sense, no?

I don’t mean to suggest it’s not sleazy—I think it’s sleazy by default. VC writing is not to be trusted.

I don't think a post on a VC blog of all places should be considered "journalism"

This is correct, I appreciate you for putting it so coherently :). I think I didn’t make it clear enough in the piece that I’m coming from a stance of fast access being table stakes, and the question being about how that’s accomplished.

he addresses this, you simply get airline pilots to pick them

Yes, it’s good