Nugatory's latest activity
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Nugatory reacted to FactChecker's post in the thread Undergrad Is infinity a necessary concept? with
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Even with analytic continuation, I doubt that there is any legitimate expansion at a point that allows that conclusion. -
Nugatory reacted to Matterwave's post in the thread Undergrad Is infinity a necessary concept? with Like.
If by logical difficulties you mean logical contradictions then yes. We build our systems of mathematics on the principle that we can't...
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This is often true even in number systems like the hyperreals that actually do have infinite numbers.
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Nugatory replied to the thread Undergrad Is infinity a necessary concept?.There isn’t any single “the concept” of infinity in math. There are multiple concepts, all of which have rigorous definitions that...
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Nugatory replied to the thread Undergrad Self-reference problem in MWI (13yo amateur, be gentle).”All branches exist” isn’t quite right, it’s better to say that there is a branch for every possible outcome, but violating the laws of...
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Nugatory replied to the thread Basic skills that kids are lacking.I think a clock and a speedometer (or tachometer, which as a one-time autocrosser is more what I was thinking about) are fundamentally...
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Nugatory replied to the thread Basic skills that kids are lacking.Having read the article, I think it’s suggesting that specifically cursive is being lost, not pen and paper in general.
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Nugatory replied to the thread Basic skills that kids are lacking.I’ll conjecture that one sticks around for a long time. Analog maps more naturally to how we perceive and control motion.