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Cake day: June 26th, 2023

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  • Popular Christianity is heavily based on paganism, which is incredibly ironic considering that paganism is generally posed as the antithesis of Christianity. The story of Lucifer is syncretized with the story of Prometheus, although Lucifer doesn’t really benefit humanity at all. According to the popular interpretation, Lucifer is the origin of all evil, became a snake in the garden of Eden, and then tempted Eve to eat the fruit of the tree of the knowledge of good and evil. However, the snake isn’t actually connected to Lucifer in the text—that interpretation was added later to explain the problem of evil (why it exists if God is supposedly good)

    The idea that Lucifer is insubordinate and violated the natural hierarchy is very old, but the idea that Lucifer is the origin of evil is relatively new.

    Christian theology contains many holes like this because there’s a tendency towards treating every word in the Bible as literal, where it may have been written allegorically or as a parable, as Jesus often did. (Just to be clear, Jesus did NOT write the Bible, I’m just pointing out that the writers of the Bible may have tried to replicate his style.) This issue is compounded when you include the Old testament, as it contains portions which are clearly mythological, but are nonetheless treated as fact by certain modern Christians.




  • Honestly, an MCU taking any more time than a couple milliseconds to boot is embarrassing. What exactly is taking so much time to load & set up? The rp2040 can run at 200mhz, and only has ~250 kb of ram. A one second boot up time would be equivalent to filling the entire memory with zeros 66 times. (Using all twelve channels of the DMA) And if you’re talking about setting up the OS, that would be around 800 instructions per byte. It just doesn’t make sense how that much time could be wasted.


  • A mile is 1760 yards, and there are three feet in a yard. Therefore, 1760 feet is 1/3 of a mile, and 2/3s of a mile is 3520 feet.

    The imperial system is actually excellent for division and multiplication. All units are very composite, so you usually don’t need to worry about decimals.


  • Cardinal numbers refer to the size of a set. (10 apples in a basket) Ordinal numbers refer to the order of elements in a set (third apple put into the basket) you can rearrange an ordered set and retain the same cardinality (ten apples in the basket) but you’d change the order of the elements (switch the third and sixth apple).

    The floor number you’re on is an ordinal number. You can rearrange the elements while retaining the cardinality of the set, (the total number of floors does not change) but the order of the set is changed (the third floor is switched with the sixth floor).

    Hope that clears up the confusion. Have a nice day.






  • I only vaguely really know what’s going on. I did some more research after commenting, and I think I understand a little bit more. The TI bubble memory has two separate layers. On of them, the ‘magnetic epitaxial film’, basically has a lot of magnetic molecules arranged to point in the same direction. The second layer has circles made of some nickel-iron alloy. What I think is happening is that the actual magnetic bubbles are held on the film, and the iron circles act as tracks the bubbles are pulled along. I don’t think electrons in the bubble are actually moving, but I think the electron spin is. That would explain why the loops are capable of moving the bubbles faster than electrons.


  • Just from a quick Google search, it looks like it’s similar to tape memory, except the data moves along the tape, instead of the tape moving over the reading head. According to this diagram by TI, it looks like the bubbles are on some iron wafer and forcibly moved around by two coils. Then, on a second substrate there are some type of read & write head.

    So here’s how I would go about this: first, I’d wrap some small metal plates in insulated magnet wire, place two permanent magnets on the top and bottom (sandwich style) and stick a read head on the edge of the plate. Then you push AC current through the two coils offset by 90 degrees. This should push the bubble in a circle, and that can be read by the tape head.

    Keep in mind though, this is a complete guess based on a simplified diagram from the 70s. I don’t actually know if this is how they work.