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A review by d6y
If the Universe Is Teeming with Aliens ... Where Is Everybody?: Seventy-Five Solutions to the Fermi Paradox and the Problem of Extraterrestrial Life by Stephen Webb
4.0
It is what it says it is: 75 individual solutions to the Fermi Paradox. They are grouped into three sections, but I'd personally liked to have just seen the best three or four in each section.