Gear ratios for no brakes riding...

No brakes,
chain snaps,
shove foot in rear wheel.
I stopped much faster than i thought it would've taken, and the only sacrifice made was the shoe.

If your correctly maintained chain snaps, you fall off, fact. In fact, you eat the road before you even know its happened.

Rosmal would suggest otherwise.

And what about snapping while resisting the pedals? You'd just fall back into the saddle.