You conveniently forgot the part about "without the assistance of someone more educated."
Eastman did not work alone. This is well documented through his COMPANY. It took four years AFTER the founding of his company for the development of celluloid film. You mean to say he had no one with a rudimentary education working for him?
Education does not necessarily have to be formal. But it MUST be systematic and careful, or nothing happens.
And in what sense is a potato chip a useful device? The world would be just fine without ever having had any potato chips.
"Until proven to be false, the possibility exists".... Hmm. It HAS been proven to be false, but you understand the basics far too poorly to understand that.
Now, leave off the Google "research," since you've made it obvious you can search and misunderstand information off the web. You've taken an impossible and blatantly wrong argument, and have gone in circles trying to avoid "proving" it (since it's impossible). And you call me "full of myself?" I've at least understood the processes at hand, and attempted to explain them to you as far as the medium allows. To really understand it, you will simply HAVE to crack a textbook.
Now, going along the "you can't say it's impossible" track is what one commonly refers to as "weasel words." You can't prove much of anything beyond a doubt. Two counterexamples are (1) it's not impossible for all the air molecules in the room you are in to spontaneously leave the room for the next five minutes, and (2) it's not impossible (to you) that you've hallucinated my existence. But I wouldn't lose any sleep over either of those.