• 3 Posts
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Joined 2 years ago
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Cake day: July 15th, 2023

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  • You ever have an image of something like fire or mist or galaxies and stars or whatever taken with a black or white background, and you want to make it a transparent background instead? Color to alpha keeps the translucent elements intact at the appropriate translucency while removing the background color. Super useful for compositing images together.


  • Yeah, this one took me a while to wrap my head around and intuitively “get it”. I first learned it was true from that mythbusters episode where they correct their past mistakes… and even they had thought that two cars hitting head on would receive the same energy as hitting a stationary wall at the speed of the sum of their speeds. They were corrected in letters written to them, and then they experimentally verified it.

    And even seeing the experimental verification, it still took me a while to really get it. The opposite speeds cancel out, making you go from your speed to zero. Same as if you hit a brick wall at that speed.

    Let’s say the two cars are going 50 mph (kph, whatever unit you want). 50-50=0. You experience the same as hitting the brick wall. It’s the difference between initial speed and final speed that matters, not the sum of their speeds.




  • I feel like “passing it through a statistical model”, while absolutely true on a technical implementation level, doesn’t get to the heart of what it is doing so that people understand. It’s using the math terms, potentially deliberately to obfuscate and make it seem either simpler than it is. It’s like reducing it to “it just predicts the next word”. Technically true, but I could implement a black box next word predictor by sticking a real person in the black box and ask them to predict the next word, and it’d still meet that description.

    The statistical model seems to be building some sort of conceptual grid of word relationships that approximates something very much like actually understanding what the words mean, and how the words are used semantically, with some random noise thrown into the mix at just the right amounts to generate some surprises that look very much like creativity.

    Decades before LLMs were a thing, the Zompist wrote a nice essay on the Chinese room thought experiment that I think provides some useful conceptual models: http://zompist.com/searle.html

    Searle’s own proposed rule (“Take a squiggle-squiggle sign from basket number one…”) depends for its effectiveness on xenophobia. Apparently computers are as baffled at Chinese characters as most Westerners are; the implication is that all they can do is shuffle them around as wholes, or put them in boxes, or replace one with another, or at best chop them up into smaller squiggles. But pointers change everything. Shouldn’t Searle’s confidence be shaken if he encountered this rule?

    If you see 马, write down horse.

    If the man in the CR encountered enough such rules, could it really be maintained that he didn’t understand any Chinese?

    Now, this particular rule still is, in a sense, “symbol manipulation”; it’s exchanging a Chinese symbol for an English one. But it suggests the power of pointers, which allow the computer to switch levels. It can move from analyzing Chinese brushstrokes to analyzing English words… or to anything else the programmer specifies: a manual on horse training, perhaps.

    Searle is arguing from a false picture of what computers do. Computers aren’t restricted to turning 马 into “horse”; they can also relate “horse” to pictures of horses, or a database of facts about horses, or code to allow a robot to ride a horse. We may or may not be willing to describe this as semantics, but it sure as hell isn’t “syntax”.



  • Mine was just all repeated digits of whatever hour. 1:11, 2:22, 3:33, 4:44, 5:55, 11:11 all “counted” in my mind when I was entering university, and it happened so freaking often it was really weirding me out. It seemed like anytime I glanced at a clock without other intention, it would be one of those times. There were probably times I looked at a clock normally, but of course confirmation bias reinforces things. But it really did seem far more often than you’d expect. My bet is that my inner clock was prompting me to look at those times because I got an adreneline or dopamine or something spike, so my subconscious got trained into finding it.



  • The Ixians and Tliaxu expansion is pretty good, and even if you don’t play with the new factions at all the technology mechanic helps a lot, particularly for the fremen, who I always found need all the help they can get. YMMV of course, but my table loved it. The Ixians really change up the game too with their mobile fortress that counts as a victory point. And having the Tliaxu in a game means that you can barter for the resurrection of leaders early, which is another potential game changer. Pretty neat gameplay interactions.

    I technically have the CHOAM/Richese expansion too, but haven’t actually had a chance to play with it yet. The game takes some real time investment to actually play…



  • Dusting and cleaning does not defeat the purpose. You’re making the mistake of thinking that cleanliness is boolean… true or false. It’s not that it’ll just get dusty again, it’s that it will get more dusty, and then even more dusty, and then dustier still, and there is actually no real practical limit to how filthy a place can get. Cleaning resets the progress to a point where you can live again.

    Now, there is a related cleaning story that could be called defeating the purpose that stuck in my mind. It’s a bit Luddite in nature, but does have a point. It’s a micro-story from inside the book “Mrs Frisby and the Rats of Nimh”:

    The story was about a woman in a small town who bought a vacuum cleaner. Her name was Mrs. Jones, and up until then she, like all of her neighbors, had kept her house spotlessly clean by using a broom and a mop.

    But the vacuum cleaner did it faster and better, and soon Mrs. Jones was the envy of all the other housewives in town—so they bought vacuum cleaners, too.

    The vacuum cleaner business was so brisk, in fact, that the company that made them opened a branch factory in the town. The factory used a lot of electricity, of course, and so did the women with their vacuum cleaners, so the local electric power company had to put up a big new plant to keep them all running.

    In its furnaces the power plant burned coal, and out of its chimneys black smoke poured day and night, blanketing the town with soot and making all the floors dirtier than ever.

    Still, by working twice as hard and twice as long, the women of the town were able to keep their floors almost as clean as they had been before Mrs. Jones every bought a vacuum cleaner in the first place.

    That’s an example of defeating the purpose, where the thing you do actually makes it worse. A similar “defeating the purpose” is when a bunch of companies lowers wages to save money, making it so that people can no longer afford their products, meaning that they earn less money after all.



  • I find it weird that the article is written as if this is a bad thing. The ai is doing what it’s supposed to, what he asked, and he even admitted it was helpful to him. Why is this “dystopian”? The AI didn’t break up with him, cause him to be broken up with, say anything falsely, or do anything but present him a summary of what his real girlfriend actually wrote to him. What is wrong with that? I literally can’t see anything wrong with this. Is the mere fact that AI summarization exists dystopian? How so?







  • My advice is to know that, unlike dogs, a cat’s personality is not built into their breed, with maybe very minor behavior exceptions. Quite frankly, dogs were bred specifically for their behaviors, artificial selection created breed personalities— cat breeding was never for personality, but usually appearance instead, leaving personality to go whatever which way.

    And secondly, you must know that a cat will not fully develop their personality until they’ve grown up a bit— you can’t learn a cat’s personality when they’re still a kitten. If you are adopting, adopting a kitting will mean rolling the dice on what you get. But adopting an adult cat will mean you can pick out a personality while at the shelter.

    Seriously. You can learn a cat’s personality from 10-30 minutes hanging out with them in a room at the shelter… but only if they aren’t a kitten. And some personalities will fit with you and your family, and some will not.

    Do you want a cuddler? An active playful cat? Or one that avoids you mostly and does their own thing? Or are you just looking for something pretty that matches your furniture? (I don’t really recommend you get a cat in this case, but historically, you’d be in good company)