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About pzkpfw

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    New Zealand
  • College Major/Degree
    B.Sc. Computing
  • Favorite Area of Science
  • Biography
    Born, grew, living, working.
  • Occupation
    Self employed programmer.

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  1. The way I see it, machines don't buy goods or services. While machines can and will take over many kinds of job, the owners of those machines/robots will still need a market to sell whatever those jobs do, to. e.g. say car manufacturing is totally taken over by robots. Great for the profitability of the car factories. But, if "everyone" has lost their job to a machine, who buys those cars? (Yeah, a bad and only partly worked through example.) So there'll be a re-balancing, if things go that way. Either people will find other kinds of jobs, or there's going to be a serious change in the way society works - more redistribution of wealth (taxation --> social benefits) and jobs (job sharing). Stuff like that. (I remember doing a school project when I was 12 (1982). It was about the "future" as posited by some "futurist". Apparently when machines eventually do all that work we would all get more leisure time. We'd all be working just 3 days a week and spending the rest of the time at the tennis club or something. I doubt it will ever be quite like that in reality, but there will be changes.)
  2. pzkpfw

    BS in Computer Science

    I have a B.Sc. in Computing. Did some math (linear algebra and discrete math) in that, but not a lot. It's a bit of a myth that computing is all about math. For me the question here is what are the other papers? If they are computing papers, for a computer science degree, what's the issue? If they are on Frisbee use or rhythmic gymnastics, then there's an issue.
  3. Has any son of a circumcised man ever been born pre-circumcised? There have been very very many circumcised men, so that's a pretty large sample. (I'm willing to bet the answer is "no"!) ---- Edit: just to note on re-reading the OP, HIV is something that can be transmitted, it's a disease. But from parent to child wouldn't actually be particularly easy (to my poor medical knowledge), unless to a baby in-utero. An HIV positive parent hugging their child won't pass on the disease.
  4. pzkpfw

    Near death experiences ,proof of afterlife ?

    Most people will experience or perceive movement in this image. That does not prove that there is any.
  5. I'm assuming he or she is going for argument by incredulity.
  6. pzkpfw

    Storing Renewable Energy

    Can be done: https://electrek.co/2018/01/23/tesla-giant-battery-australia-1-million/ (here used mainly as a smoothing mechanism.) But as above, current battery technology just isn't what it needs to be, to be cost effective in the long run to be the main storage mechanism. (One alternative that always amused me, hydroelectric dams where water is pumped back up into the reservoir when power is cheap, to be used later when the power wasn't so cheap. Could also be used to "store power" from renewables.)
  7. I don't see it as useful inside the lift. If you get in and the lift starts moving, you'd have to have a "stop now" button to press when the name of the place you are going to comes up. That could be hard in a crowded lift. You also don't want people getting in the lift and watching the names scroll by before they choose a button to push. That'll slow down others. A clear list outside the lift might be useful. --- There's a local building with touch screens on each floor where you can select where you want to go, not just "up" or "down". The screen will tell you which lift to take, and when you get in the lift knows where you want to go. I presume this is all very efficient as software can juggle the demands of all the people. --- I used to take the lift to the top floor of the tallest building in Suva, Fiji. A recorded voice would introduce you to the building, then tell you the weather. Even though I would go to the top floor, it never actually finished telling me the weather. Waste of time.
  8. https://www.google.co.nz/search?q=Dictionary#dobs=paragraph
  9. mistermack, you are missing half of the point of the speed of light: it's not just a limit, it's invariable. It's constant. You keep wanting to treat it as merely a speed limit that things get compared to, but it's more than that. Every observer must measure the speed of light to be c - no matter what they are doing. If you and I are travelling towards a light source, even though we travel at different speeds towards it (which we can tell by a growing or shrinking distance between us) we both would measure the speed of light coming from the source as being c. (That's what shows us that it's time and distance that are not - relatively - constant). No other speed works like that. If we were both travelling towards a source of sound, even your blind underwater case, we'd measure different speeds for the waves of sound travelling towards us. Same with your hypothetical c/2 thing. There's no way it can have truly relativistic effects, as the constancy of c does, and be in the same Universe with the same laws. (NB: your creatures might all agree on the speed of sound - but that's relative to the water, not relative to themselves.)
  10. pzkpfw

    Most Overrated Novels of All-time?

    I'd read some Greg Bear I really liked, so was keen to try Eon, which I think is considered a classic. Finding it very hard to slog through the last few chapters. Have not picked it up in a Month. Similarly, liked a lot of Robert A. Heinlein, but never finished Stranger in a strange land. May try again one day. The Frank Herbert "classic" Dune, has already been mentioned. I thought it started well, then I got bored of all the "the prophecy said someone would do this, then he did that". Did finish it, but was never tempted by the sequels. ( Now that I think of it, never got far into Clockwork Orange, Catch-22, nor The World According to Garp. All considered (more or less) classics at the time I tried them. )
  11. https://en.wikipedia.org/wiki/Pareidolia Pareidolia
  12. They were predicted by theory, before observation was made; that's pretty strong stuff. Also, existence of a literal singularity is not considered fact. The idea of an infinitely dense infinitely small mass is mostly pop-science. All that's needed for a black hole is for its mass to be within a certain size, not necessarily a singularity. So "another fundamental force preventing the formation of a singularity" would not actually disprove or prevent black holes.
  13. pzkpfw

    Trump is the most smart American.

    Trump started by being given a large sum of money by his Father. By some estimates, his current wealth is no greater than if he had simply stuck that money in a bank account. The idea that he's a great businessman is a myth. One thing he is good at, is self promotion.
  14. pzkpfw

    Freefall acceleration: 9.8m/s/s = 9.8m/s^2

    Don't want to push a dead topic but another thing occurred to me just before the previous post and I wanted to get it off my chest, that is, to show algebraically how the .../s/s becomes ...s^s. The thing to remember is that A/B = A x 1/B So m/s/s = m/s x 1/s = (m x 1)/(s x s) = m/s^2