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Cake day: June 26th, 2023

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  • Not having good time awareness was my big issue growing up and for a significant part of adulthood. I was always losing track of time and showing up late for just about everything. People often suggested that I set an alarm to remind me. I didn’t know how to explain to them that if two alarms wasn’t enough, how would setting more do any good? (also those alarms needed to be maintained and adjusted, which added to the stress.)

    After my diagnosis I made two significant changes. First, I became self-employed. That eliminated the time clock issue. And since I could set my own schedule, it was much harder to actually be late. Second, I decided that I would not longer be upset with myself for being late for appointments. If I was late, that was something I could not go back and fix therefore it wasn’t worth getting upset about.

    This had a dramatic effect on my ability to arrive on time. Almost overnight I was almost never late for anything and my stress level about it went down to almost nothing.

    I still get lose track of time on occasion. I can begin work on a project in the morning and suddenly realize that it is no longer daytime and several hours have gone by. But now I also have a dog and he reminds me to stop and take a break every two or three hours.






  • I think for people like me, it isn’t that we dislike math. It’s that we dislike having to work out the formulas without there being much instruction on what the formula is doing. I want to know the theory behind it. Explain, at least once in a while, what is happening in the formula. Without context of what the calculations and formulas are doing (including refreshers on the basics) it starts to become just a jumble of meaningless numbers.

    I find that my understanding of math is much better when I can see each step written out in long form. Once I understand what is happening, using the formulas is much easier.

    If the instruction is just a string of memorization exercises, I will pass the test when it is given, but would I fail that same test just a few months later because I will have no context to give it meaning and I will forget most of it.



  • Hard to say exactly what they did without taking it apart, but it kinda looks like the washers might be springs. Concave when loose and flat under tension. That would help to keep the blades close together even after heavy use and wear.

    I would assume that the inside face of the bolt has a square or rectangular profile that seats into the hole to prevent it from turning. The nut looks like it was custom made for this use.

    The nut and the bolt could be made in small quantities on a metal lathe. For large quantities they would likely be made on a screw machine. The washers are probably an off-the-shelf part but could also be made on a screw machine.








  • BillDaCatt@lemmy.worldtoNo Stupid Questions@lemmy.world*Permanently Deleted*
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    3 months ago

    Based on what I remember from my biology class, many traits are decided by dominant vs recessive genes. The genes in your DNA are arranged in pairs. Your parents each provide you with one half of that pair.

    • Recessive genes require both genes to be the same to be expressed.
    • Dominant genes only require one to be expressed.

    Let’s assume that tallness is the dominant gene and being shorter is the recessive gene.

    If your father has one gene for being more than 182 cm and one gene for being less than 170 cm, he will be tall because the gene for tallness is dominant. If your mother has two genes that both select for being less than 170 cm tall, she will be noticeably shorter than your father because she has two recessive genes.

    If your father gave you his recessive gene and your mother gave you one of her recessive genes, you would be noticeably shorter than your father.

    This can also happen when both parents are tall but each of them carries both the dominant (tallness) gene and the recessive (shorter) gene. If they each provide only the recessive gene to their offspring, the result is an offspring that is significantly shorter than their parents.