• 0 Posts
  • 259 Comments
Joined 1 year ago
cake
Cake day: July 3rd, 2024

help-circle
  • Sorry for the rant. I long story short, I agree with you.

    The quadratic formula.

    When we learned to use it in algebra, it was just rote memorization that made little sense. We knew there was a proof for it, but we were told it was beyond our level and to just wait. When we finally touched on it again in Calculus, it was little more than a footnote. Since we had developed better tools for finding roots already, we did little more than note its existence and solve the problems more generally. I don’t think we got around to the real proof of the quadratic formula until later with Linear Algebra. Most people aren’t going to get that far. Most people don’t have any need to. The quadratic formula is a bit of a chicken and egg problem. You need upper level math skills to prove it, but we learn it early in order to practice algebraic skills to get to that level.

    I just wish that we’d have been taught some of those calculus fundamentals and ideas earlier. It would have been like a light at the end of the tunnel. Maybe we wouldn’t be ready to rigorously work through limits and integrals before all that algebra practice, but even a child can understand acceleration and its relationship to changes in velocity. We have so many documentaries about special relativity, general relativity, and quantum mechanics. Almost no one watching these documentaries can do that math, but we don’t worry about that. Our society could benefit from everyone having more general knowledge about the very broad strokes of calculus, differential equations, statistics, and combinatorics long before we worry about teaching the mechanics of those maths to them. Not everyone needs to know HOW to do them, but everyone can be taught to appreciate WHAT they do and WHY they are important and a part of every facet of our lives.














  • I stopped drinking soda regularly decades ago and went through the same thing, drinks I once enjoyed were now either “meh” or way too sweet and acidic to be able stomach more than a few ounces. Cutting out soda also meant cutting out a lot of artificial sweeteners (because I was never very picky about diet or not, I just wanted the bubbly sweet. That meant that when I did try diet sodas after having quit for some time, they tasted even worse or sometimes even made me feel worse. This is all anecdotal obviously, but it seems like you’re experiencing something similar. It’s not just you. There’s nothing wrong with you.



  • It could have been an accident or incident that resulted in a death. They may have been collecting evidence. There are even some police in my area that uses conventional land surveying equipment and rapid high density laser scanners. Precise measurements of things like skids marks and other evidence of how the vehicles came to rest can be used to estimate initial speeds and confirm or refute the testimony of witnesses.

    It could also be something more mundane like an actual land surveyor collecting data to support future design work or verify completed projects.

    Neither of these are jobs that can be done at night or at times more convenient for your car.


  • You want mpd to server and play the music, connected with a web front end (there are a few to choose from) accessible on the private store wifi. You should probably serve this frontend only to a certain machine on the network (like the managers computer in the back) and lock everything else out. The last time I ripped CDs on Linux I used whipper, which I believe was the successor to morituri. This is all only legal if the CDs they have already included the licensing fees to play them publicly or are themselves freely licensed. There are sources of freely licensed music out there that you can play publicly without paying.




  • The article is saying that these sharks aren’t really sharking though. The sharks behavior has been changed by environmental factors (regular human feeding and humans raising the local sea temperature by dumping warm water from the desalination plant).

    1. Sharks are attracted by usually warm water from desalination plant.
    2. Tourist guide boats start chumming the waters to keep the sharks around for tourists.
    3. The attraction of so many mostly harmless sharks changes their feeding dynamic. Ever tried eating an ice cream cone near a small child? Ever tried pushing an ice cream cart through a crowd of small kids? Way different dynamic as supply and demand changes as the crowd grows.
    4. Formerly mostly harmless and “shy around humans” sharks start directly approaching humans as a source of food.
    5. Sharks investigate human, beg for food. How do sharks investigate? By biting, nibbles really, or bumping into people swimming.
    6. The first bite generates a predictably violent reaction from the humans, which triggers a feeding frenzy response. Humans aren’t equipped to defend or escape this.

    The point is that at every step of the way, these sharks are acting in a very strange way (for them) as a direct result of human action. We’ve seen this kind of thing before when people feed wild animals, strange and dangerous human seeking behaviors develop: alligators, bears, moose, etc. Dangerous animals? Yes, but the behaviors that result in human deaths are in no way natural.