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Cake day: September 25th, 2023

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  • At that point, I think pulling it out to an appendix is the right thing to do. Whenever I find a book with appendices, I do one of two things.

    1. If an appendix looks like “prerequisite” material, I read it first.

    2. If it looks like “further reading” or “deeper dive” material, I note where it’s referenced in the main text and return to it later.

    The main reason I prefer footnotes to end notes is the separation of concerns. When a book has end notes, they are usually mixed with citations. I don’t mind managing 2 bookmarks or the eReader linking back and forth, but I really dislike following the reference to find that it just points at a whole other book.


  • Structurally, the most challenging book I’ve ever read was “The Message of THE QUR ĀN” by Muhammad Asad.

    Start with the fact that the QUR ĀN itself is extremely non-linear. So much so that I think that this alone requires a great deal of study to address.

    The text is 2 columns, the original Arabic adjacent to his English translation. There are copious and often long footnotes. The footnotes cross reference other footnotes, sometimes in chains. I read only the English.

    I had to read it 4 times. Once just ignoring footnotes. Again, this time including just first-level footnotes. Again, following footnote chains back to their sources in the text. Finally, to reread just the text after pretending that I had everything figured out.

    It took me a year to get through it to my satisfaction, although it was not the only reading, or even major project.







  • jadero@mander.xyztoScience Memes@mander.xyzhmmmm
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    4 months ago

    It’s always better to gain a full understanding of the system when trying to make important decisions.

    The trolley has two sets of wheels, leading and trailing, both of which must remain on the same set of tracks.

    The switch is designed to enable the trolley to change course, moving from one set of tracks to the other.

    Throwing the switch after the leading set has passed, but before the trailing set has reached the switch points will cause the two sets to attempt travel on separate tracks. The trolley will derail, rapidly coming to a halt. If the trolley is moving slowly enough to permit this action, nobody dies.

    Source: former brakeman (one of the people responsible for throwing switches), section hand (one of the people responsible for installing switches), and railroad welder (one of the people responsible for field repairs of switches).


  • Interesting. One of the chemicals they reference is tetrachloroethylene. According to this Wikipedia article:

    Perhaps the greatest use of TCE is as a degreaser for metal parts. It has been widely used in degreasing and cleaning since the 1920s because of its low cost, low flammability, low toxicity and high effectivity as a solvent. The demand for TCE as a degreaser began to decline in the 1950s in favor of the less toxic 1,1,1-trichloroethane. However, 1,1,1-trichloroethane production has been phased out in most of the world under the terms of the Montreal Protocol, and as a result, trichloroethylene has experienced some resurgence in use as a degreaser.[17]

    My grandfather had Parkinson’s. I would imagine that he had plenty of exposure in his work as a mechanic from about 1925 on.


  • Same as all the crap that gets sold today. Some scammer, recognizing the inherent gullibility or natural cognitive biases of people invents a product or service or story, claims expertise and success, and gains some combination of wealth, power, and fame.

    For example Gwyneth Paltrow makes bank by selling all kinds of crap on her Goop website.

    Humans are easy to fool because our brains don’t work the way we think they do and other humans exploit that for their own gain. Some, like Penn and Teller, do it honestly for entertainment, others, like Sylvia Browne, do it dishonestly by claiming powers they don’t have.




  • jadero@mander.xyztoScience Memes@mander.xyzMagic π
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    5 months ago

    There was a recent post asking what the self-taught among us feel we are missing from our knowledge base. For me, it’s being able to calculate stuff like that for making decisions. I feel like I can spot an equivalence to the travelling salesman problem or to the halting problem a mile away, but anything more subtle is beyond me.

    Of course, in this situation, I’d probably just see if I could find a sufficiently large precalculation and just pretend :)