"An invaluable little book.... What Makes a Terrorist uses standard tools of economics and statistical analysis to get at the truth about terrorism.... Krueger finds one familiar fact in all his numbers. Countries with fewer civil liberties tend to produce more terrorists."

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And extracting one molecule's signature in spectral analysis from the rest of the signatures is hard work, sort of like picking out the sound of your toddler's voice in a roomful of screaming children during playtime. It's hard, but you can do it.

— Neil deGrasse Tyson