[maro]

By bitflips? And who cares whether it's binary or base 256? It's irrelevant. Binary can readily be translated into base ten or hex.

[Nebullis]

And who cares whether it's binary or base 256?

I wasn't referring to 'base'. I was referring to state. A bitflip mutation program requires a system of two states such as software uses. And, yes, you can find multiple bitflip paths between DOS and Windows XP.