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About gib65

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  • Birthday 12/29/1976

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    writing, drawing, philosophizing...
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    B.Sc. computer science & B.A. psychology
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    quantum/relativity/modern... the deep stuff
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    web/software developer

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  1. Desensitization refers to neurons getting tired of firing. It happens over the course of minutes. They just need to rest for a few minutes and they are ready to fire again. Tolerance, on the other hand, is the process by which neurons attempt to adjust to over- or under-stimulation by increasing or decreasing the number of receptors being stimulated. This happens over the course of several days or weeks, and takes about a week to recover from. Here's a link: https://www.pharmacologyeducation.org/pharmacology/desensitisation-and-tachyphylaxis
  2. Can one become tolerant to one's own neurotransmitters? I know this can happen with a drug like dexedrine. Dexedrine increases the supply of dopamine in the synaptic gap, and based on my own experience, one can develop a dopamine tolerance at these sites. But what if you were in an environment in which you were being constantly stimulated by things which resulted in dopamine releases in the brain. For example, what if you were a video game addict. I'm told that the joy of playing video games comes from all the little dopamine releases that the game provides. Would you develop a dopamine tolera
  3. Thanks for the replies everyone. So what's involved in creating a vaccine? Also, CharonY said that the number of deaths would be much higher if we were to "rip the bandage off now". I can see how the death rate would be higher, but why the absolute number of deaths. Is a virus that spreads slowly less deadly than a virus that spreads quickly?
  4. I don't get the strategy the world is using to fight COVID19. I get that social distancing and social isolation are ways to reduce the chances of catching and spreading COVID, but what's the ultimate goal? Are we trying to eradicate the virus? Prolong the eventuality of catching it? Are we waiting for a vaccine? What's the criteria for considering the pandemic over so that we can resume our lives? I don't understand social isolation in particular. It's almost like we think that by isolating ourselves, we're going to be living as isolated "family units" so to speak, such that the only cont
  5. So would you say that the sequence (0.9, 0.99, 0.999, ... , 1) is not a sequence since 1 can't be mapped?
  6. Well, the point is, it has a last without a second last.
  7. Hello, I'm in a online debate with someone about some deep mathematical concepts. My opponent was trying to convince me that you can have a sequence of numbers for which there is a first element, a last element, but no second element and no second last element (where the sequence contains more than 2 elements). I thought that was absurd until he gave me an example: all the real numbers between 0 and 1. It definitely has a first member (0) and it definitely has a last member (1), but after 0 there is no "next" real number. Likewise, there is no real number that comes just before 1. Ye
  8. Hello, I understand that scienceforums.net is not about giving medical advice, but I have some questions about how drug tolerance works and I'm wondering if anyone knows about a good source that will answer my questions. Here's some example questions: 1) Can I expect that the time it takes to get over tolerance is relatively equal to the time it takes to become tolerant? So let's say it takes 4 days to become tolerant to a drug at a specific dose. Would it then take 4 days to undo the tolerance if I abstain from the drug for those 4 days? 2) Would tolerance buildup occur at
  9. What about the imaginary number, the square root of -1? <-- That's said to be imaginary, therefore not one of the reals. Does that make it a hyperreal? Do the hyperreals include imaginary numbers?
  10. Here's the youtube video where Michael Stevens talks about cardinals and ordinals: Note that at 7:55, he explains how only cardinals refer to amounts. Note the statement: "Omega plus one isn't bigger than omega, it just comes after omega." Another question I have is: infinitesimals--are they divisible? In other words, is an infinitesimal defined as the "smallest possible number" (in terms of magnitude, not how far below 0 it is)? Or is it more of a set of numbers that are infinitely smaller than any real number? I would think its a set. Just as for any infinitely
  11. Yes, the definitions and explanations on the web are very complex. They just confuse me. I'm a better learner if I just ask someone and they explain it in plane English. Ah, but you're essentially saying the 0 of the hyperreals is just the 0 of the reals, correct? But is it correct to think of 2 x R as twice the distance from 0 as R is from 0? If so, and if 2 x R is just another hyperreal number, then is it fair to say that there can be infinite distances between hyperreal numbers (assuming both hyperreal numbers are greater than any real number). Do you m
  12. Hello, I've been getting into the concept of hyperreal numbers lately, and I've got tons of questions. What I understand about the hyperreals is that they are numbers larger than any real number or smaller than any real number. I'm sure you can imagine how counterintuitive this sounds to someone like me who's new to the concept. It's like talking about numbers greater than infinity. I always thought that was impossible. So it shouldn't be surprising that someone like me would have a ton of questions. I'll start with a couple. 1) Assume that R is a hyperreal number greater than any re
  13. Why isn't the universe just a big soup of chemicals? Why is it that when we find water, or dirt, or air, we find it with more water, dirt, or air. In other words, why not just a single water molecule by itself? Why do water molecules tend to stick around with other water molecules? When we look around the world, we don't see one uniform substance making up everything--we see rocks, trees, sky, clouds, rivers, animals, and so on. In other words, different substances clumping together and staying separate from other substances. Take the sky for example. It is not only composed of oxygen, ni
  14. Thanks very much Nevim, those are good links
  15. Hello, I remember reading an article a long time ago about the tendency of people to disagree with depressed people. So if a person suffers from depression, people are more likely to disagree with that person's statements and opinions. It doesn't seem to matter what those statements or opinions are (positive or negative, offensive or flattering), and it doesn't seem to matter whether the depressed person makes their depression evident or acts as if they are happy. I can't find that article. I can't seem to find any research on any studies that would support the above. No doubt, my go
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