Dodge is best, Chrysler is worst, they are the same company, and I trust this report because? Because I care so much about quality of cupholders?

It can only be attributable to human error. ;-)

I disagree that "Bitcoin will nearly always be a deflationary system" (and suspect that Krugman would too). What he meant to point out, as I understand, is that under the current deflationary conditions Bitcoin is also deflationary. It is a "flaw" of Bitcoin, if you want, that by itself it doesn't solve the problem caused by the burst of the housing bubble and the wrongheaded responses that politicians gave. But that would be asking too much. The fair question is: does Bitcoin make transactions easier? Another question, academic for the time being, is what would happen if there were inflationary pressures. I suspect that Bitcoin would appreciate, but that's conditional to it becoming a credible reserve of value.

I second the suggestion Godel Echer Bach by Hofstadter. Also his columns in Scientific American as well as Martin Gardner's - available in book form. Plus, Feynman's QED - though there is almost no math in it, but nothing would so much motivate high school students to learn! On the heavier side: The road to reality, by Penrose, touches all the math as well as all the Physics.