Writing about science is hard. To start with, it’s complicated. Scientists deal in concepts which most people outside their field don’t understand. Most of us have no more than a vague idea of what a boson is (my spell checker doesn’t even recognize the word) or what the difference is between a brontosaurus and an apatosaurus (they’re the same beast).

An even bigger complication is the way science works. Scientists accumulate information, form hypotheses, and try to find out if their hypotheses explain the data. If they do, hypotheses build up into a theory. The term “theory” doesn’t mean a tentative guess, as it does in ordinary speech; it means a set of ideas which is the best explanation available.
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