Spot on with the science? Leave it out Paulie, what Bill Gates knows about "the scence" could be written on the head of a pin - with a marker pen.
Microsoft stole DOS from Digital Research, then screwed up the simple task of modifying it so that it did not violate copyright, they stole Windows from Apple, though to be fair Apple had first stolen it from Xerox, and they've contracted out the development of every Microsoft product since.
Like Apple, a corporation falsely renowned for innovation because the only thing they innovated was syllogistic rebranding, Microsoft are corporate pirates. The archived market dominance not because Bill Gates is such a great businessman, but because they had the might of IBM and the US Government DoD behind them.
As for Gate's claims that he is trying to alleviate suffering through vaccination programs, ask people in India or West Africa what they think of Gates Foundation vaccines.