Did I Mention...
...that a guy has invented a machine that purports to kill cancerous cells?

It seems worth repeating. And, although this isn't evidence that it will actually work, it occurs to me that this is exactly the kind of step forward described again and again in Bill Bryson's history of science, in which someone without the "proper background" applies what he nonetheless knows and intuits and solves a problem that nobody else could figure, or even knew was a problem to be solved.

We can always hope.