2019

Readers may remember philosopher Justin Smith, who thinks that we can understand life better if we “give up the idea of rationality as nature’s last remaining exception.” Neurosurgeon Michael Egnor weighs in, responding point by point to the essay, for example: Material states of the brain can, of course, influence our power of reason—an ounce of whiskey can have quite an effect on our judgment—but the power of reason itself is immaterial. It cannot “evolve” because natural selection, whatever its worth as a scientific hypothesis, needs matter to act on. [Smith:] “Reason is exceedingly rare, a hapax legomenon of nature, and yet this rarity has led to a bind: when pushed to account for its origins, thinkers who champion reason’s Read More ›

Remember the astronomer who thought that space detritus Oumuamua might be an extraterrestrial lightsail? He’s back: Harvard professor Avi Loeb thinks humans should be on the hunt for signs of alien life and alien death. During a recent presentation at the The Humans to Mars Summit, Loeb argued that the discovery of a dead alien civilization could serve as a sort of cautionary tale for humanity, letting us know what not to do if we want to survive. “The idea is we may learn something in the process,” he said. “We may learn to better behave with each other, not to initiate a nuclear war, or to monitor our planet and make sure that it’s habitable for as long as Read More ›