Yeah, but by your logic:
If you happened to live below a major mountain range in the floodplain and I had a dam in that floodplain, I could (for all I care) let all the water out during a major flood because the upstream cause(s) of the flood would be bigger than the release of water...
Silly logic.
what kind of idiot are you? what the hell does flooding have to do with Vulcano's being the #1 polluters in the world?