• 18 Posts
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Joined 1 year ago
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Cake day: June 11th, 2023

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  • A fox of the same species was found in a much older grave in another part of Argentina nearly a decade ago. It may also have been a pet but its diet was not analysed.

    As usual, it’s more the article (and especially the headline) than the science. Here is the Abstract of the study.

    It’s much more about the specific burial and the inferences that can be reasonably drawn about South America before the introduction of dogs from the north 5k years ago. It references multiple burials with non-dog canids from across time periods in S.A., including at least one from about 4k years ago, as well as many other remains scattered in with human burials. It seems to build on existing theorizing that pre-Columbian practices might have changed more slowly than post. Then there are the statistical arguments. If you occasionally find a fox in human burials, based on the number of human burials you didn’t find, you can feel pretty confident that there were more foxes buried with humans.







  • Last night, I watched ‘The Conners’

    There’s yer problem right there, buddy.

    More seriously though, I don’t think any sitcom is obliged to be “educational.” If most of the audience laughed and didn’t find the narrative out of step with the tone of the show or the characterizations to be distractingly broad compared to earlier seasons/episodes, then it was a “good” episode of The Connors.

    Now you tell me, do the Connors usually try to do the right thing and learn lessons, or are they kind of a bowdlerized “Shameless” now? I do not plan to watch enough to find out for myself.





  • Drawing an imaginary factory- and they wanted kids to do this before teaching them the parts of the cell- isn’t going to help you learn what mitochondria are.

    That sounds like it’s an exercise meant to get the kids thinking about a multi-faceted system existing inside a single structure, with parts that are interconnected but distinct, and will lead into a common metaphor teachers use to teach about biological cells. Not being graded means they’re not judging the kids on what they know or don’t, but want to evaluate where they are with this sort of thinking and figure out what they will focus on. Also, your kid may be smart and already know where they’re going with this, but others in the class may not. If she does, she could probably knock that out in fifteen minutes. Even if you decide that she doesn’t need to do it, I don’t think it’s stupid busy work, at least not necessarily.

    Some teachers are dumb; we need too many of them and pay them too little for each and every one to be a superstar. The ones coming up with curricula and lesson plans usually aren’t, though.




  • I am not quite sure I’d be ready to recommend it, but your more adventurous patrons may want to experiment. These keycaps are PBT, a cousin of polyester. They are not particularly pleasant smelling when heated or especially when burned, but they’re not as unhealthy as ABS (the other common plastic for keycaps) and certainly not as bad as the straight up poison gas that comes from PVC. I use a basic 5W blue diode laser, coat the keycap with an “infusible ink” pen from Cricut (most of their infusible products are polyester-based), put it in an alignment jig, then laser a raster image “low and slow.” My particular laser seems to do best when I do two or three passes at 2% power and 45mm/minute. The idea is to heat it roughly in line with the crafting heat presses without letting the heat spread and color in areas beyond the beam. I experimented with actually burning or engraving, and that sort of works, but (1) it’s stinky, and (2) the ash wipes away and you’re left with a mostly colorless letter-shaped indentation. The “dye sub” technique produces barely any fumes at all. There are a few people on youtube who’ve tried similar techniques, and quite a few who have used different heat or dye sources.

    Aesthetically, the process was only marginally successful, though I’m optimistic about the longevity, at least compared to other low-end manufacturing techniques. I’ve been using a similar set of home-lasered keycaps for about a month with little to no wear. My jig was not as good on that set, AND I tried to center the keycap legends, meaning every fraction of a millimeter was painfully obvious. These legends didn’t end up exactly where I might have liked either, but they’re all off by the exact amount (about 1mm), so being consistent, the alignment isn’t too bad.








  • From my keebtalk post, which also has more pics:

    It’s early obviously, but I’m optimistic about this one. It feels pretty nice, and the Jades are almost as nice as the Navies, just missing that slight “kerchunk!” that the Navies have. The Jades are a bit snappier, and I agree that they may be ever so slightly louder, but I don’t think they dethrone my dark blue fingerbreakers.

    After my last set of keycaps came out with some fairly obvious alignment issues, I rethought my jig and made a new one that could support 26 1u keys, plus one of arbitrary width. I also went with corner legends instead of centered, as that punishes a lack of accuracy much less, if you can at least get your setup repeatable. Then, I did clusters together in batches (i.e. all alphas in one run, all F keys together, etc.). The result is a much less jarring alignment situation. It would be ideal, if the plastic itself had cooperated. This PBT recipe didn’t like the infusible ink nearly as much as the DSA keycaps on my other no-stabs build. Legends are not as crisp as I’d like, and the colors are pretty muted, but the improved alignment makes this a modest victory.

    Overall, I like (though not quite love) the way they came out, and the overall effect for the board, between the layout, case, and font, is a bit “Apple meets Logitech,” which may or may not be a good thing, but it’s always satisfying to wrap one of these up.