It was perhaps in 2006 or 2007 that I first heard the word "fracking".
I was sitting in the chair at Fetterolf's Barber Shop, getting a trim. Next to me was a Penn State geology professor, talking with animation about the Marcellus shale; how new technology was going to upend the energy industry, and (what's more) how it was going to upend the economy of rural Pennsylvania. Know what? He was right.
The Probability of Undecidability
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There’s a lot we don’t know. There’s a lot we can’t know. But can we at
least know how much we can’t know? What fraction of mathematical statements
are und...
3 days ago