I don't agree that's it. ... it really doesn't make it that much more expensive for bots, it's just a short delay. In fact, I doubt it makes a difference at al

I don't agree that's it. ... it really doesn't make it that much more expensive for bots, it's just a short delay. In fact, I doubt it makes a difference at all. But it makes things really annoying for humans. So I don't see any advantage in that trade-off.