Good points HK. I guess for the most part it comes down to scientists. We could use your theory on a lot of things, the common "what if" is usually answered and silenced by good old common sense. When we find life I think we'll know it. But who knows what that maybe be, humans only know so much, there are probably thousands and thousands of other matters out there we know nothing about. People in remote African and Amazon villages only know of fresh water and fresh milk, doesn't mean other liquids they'd never heard of (Soda, beer, juice, spirits, etc) don't exist, they've never been introduced to them is all. Life to me is anything that breaths, eats, moves and communicates. This also covers in their own weird and perhaps unusual styles. We breath air, they could snort some gooey substance or breath sulfuric acid, still a means of breathing to stay alive. Life could be magnifying or telescope sized creatures to 500ft beings, who knows. Sad thing is I doubt they'll find anything in our life time or lifetimes to come for some time.
