The Brain in a Jar thought-experiment is most commonly used to illustrate global or Cartesian skepticism. You are told to imagine the possibility that at this very moment you are actually a brain hooked up to a sophisticated computer program that can perfectly simulate experiences of the outside world. Here is the skeptical argument. If you cannot now be sure that you are not a brain in a jar, then you cannot rule out the possibility that all of your beliefs about the external world are false. Or, to put it in terms of knowledge claims, we can construct the following skeptical argument. Let “P” stand for any belief or claim about the external world, say, that snow is white.
If I know that P, then I know that I am not a brain in a jar
I do not know that I am not a brain in a jar
Thus, I do not know that P.
The Brain in a Jar Argument is usually taken to be a modern version of René Descartes' argument (in the Meditations on First Philosophy) that centers on the possibility of an evil demon who systematically deceives us.
Red dwarfs are by far the most common type of star in the Milky Way, at least in the neighborhood of the Sun, but because of their low luminosity, individual red dwarfs cannot be easily observed. Because of the comparatively short age of the universe, no red dwarfs exist at advanced stages of evolution.
T. rex's brain was larger than the human brain, but the cerebrum (the part of the brain that we use to think) was tiny. T. rex's brain was long and almost cylindrical in shape. Only very advanced theropods, like the
dromaeosaurid dinosaurs (for example, Deinonychus and Velociraptor), were probably smarter than T. rex
"You are the salt of the earth. But if the salt loses its saltiness, how can it be made salty again? It is no longer good for anything, except to be thrown out and trampled underfoot."
Lot asked his wife for salt for the guests and she replied, "Also this evil custom you wish to introduce into this place?” She had no salt in the house and went from door to door asking neighbors for salt for her husband's guests, letting everyone know that Lot had ignored the laws of the city by inviting strangers. A short time later, a mob gathered at Lot's door, demanding that he give up his guests to be mistreated.
The next morning, as Sodom was about to be destroyed, the angels rescued Lot and his family. As they fled, the angels warned them not to look back at the city. It was not appropriate for them to stare at the suffering of others. But Lot's wife disregarded the admonition and, "She looked from behind, and she became a pillar of salt (Genesis 19:26).
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https://m.youtube.com/watch?v=G7TJyPAyTiQ
I'd never heard of them before but oh, boy! That Moog Synthesizer looks sexy!