It was little under 250 years ago that Antoine Lavoisier dispelled the notion of "phlogiston" in combustion and discovered oxygen, bringing chemistry, overnight, into the modern age. P.S. : Lavoisier was beheaded during the French Revolution, (after which time he made very few scientific discoveries, we presume). Nonetheless....I wonder if our current understanding of chemistry (and the universe) may be just as primitive as that just preceding Lavoisier? Are there any major FUNDAMENTAL discoveries yet to be made, that would make us look like ignorant alchemists? (Actually, the alchemists ALMOST got it right in a lot of areas...close, but not quite). Could it be that quantum computing will put everything we THINK we know to shame? Food for thought.