In this week’s eSkeptic:
FROM SCIENCE SALON # 9
Gary Taubes Warns About Sugar in Your Diet
Among Americans, diabetes is more prevalent today than ever. Obesity is at epidemic proportions; nearly 10% of children are thought to have nonalcoholic fatty liver disease. And sugar is at the root of these, and other, critical society-wide, health-related problems.
This Moment is from Science Salon # 9, recorded on January 22, 2017, in Pasadena, California, Gary Taubes discusses the dangers of the metabolism of fructose in the liver.
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In this week’s eSkeptic, Peter Kassan examines the idea that we are all just computer simulations living in a computer simulation.
I am Not Living in a Computer Simulation, and Neither Are You
by Peter Kassan
The notion that we’re all just computer simulations living in a simulated universe—once the stuff of late-night college dormitory bull sessions—has now resurfaced, having been espoused by (among other eminences) a world-famous astrophysicist and an Internet entrepreneur billionaire.
The notion is the latest manifestation of what was perhaps first contemplated (and then, at least to his own satisfaction, disproved) by Descartes, whose cogito, ergo sum—I think, therefore I am—was the first step in an attempt to figure out what can be reliably known, although he considered not a computer program creating the illusion of his body and his world, but an evil demon. The idea is a close cousin of the philosophers’ thought experiment (or parlor trick) known as “brain-in-a-vat,” which is said to have inspired the Matrix movies. Notice, though, that brain-in-a-vat requires a real brain in a real vat and the Matrix movies had real brains in real people plugged into their simulated world. The proposition that we’re all just computer simulations in a simulated universe eliminates the vat, the brain, the people, and the world. It can also be seen as the nerd’s version of the notion that we’re all simply dreams in the mind of God—perhaps the central creed of a Church of Computer Science.
The computer simulation argument proceeds along these lines:
- The universe contains a vast number of stars.
- Some of these stars have planets.
- Some of these planets must be like Earth.
- Since intelligent life arose and eventually invented computers on Earth, intelligent life must have arisen and invented computers on some of these planets.
- It is (or inevitably will be) possible to simulate intelligent life inhabiting a simulated reality on a computer.
- Since it’s possible, it must have been done.
- There must be a vast number of such simulations on a vast number of computers on a vast number of planets.
- Since there’s only one real universe but there’s a vast number of simulations, the probability that you’re living in a simulation approaches one, while the probability that you’re living in the real universe approaches zero.
SKEPTICALITY EPISODE 286
Fighting post-truth politics, promoting rational thinking and wise decision-making in the political sphere seems like it has become harder in the past couple years or so. Gleb Tsipursky is the founder of Intentional Insights, which unites reason-oriented people to popularize science-based strategies for wise decision-making and rational thinking in politics and other areas. Gleb is a tenure-track professor at Ohio State in the Decision Sciences Collaborative and History Department. In this episode of Skepticality, Derek got to steal some of Gleb’s time to chat more about his work and his “Pro-Truth Pledge,” whose purpose is to change the incentive structure for public figures.