Math and Logic Puzzles: Redux

[Invisibility]

I think I am just misunderstanding how this works but can HyperErcules not just keep hacking away at the outermost heads until he eliminates all them, then move down and continue chopping away? The hydra is finite, and each head will only grow further down from the head you just chopped off, meaning that, eventually, he'll get down to a point where the signal has nowhere to go.

[Invisibility]

oooh right right