Professional industrial and jewelry designer (here’s my Bēhance portfolio), hard-sci-fi enjoyer, cat lover and procrastinator. Started a few communities on kbin: Urban Details, Industrial Design and Jewelry Design, feel free to join if you find those interesting.
You can tip me if you like or use something I made.

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  • 134 Comments
Joined 1 year ago
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Cake day: July 1st, 2023

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  • Edit: This person deleted their comments, so to clarify, it’s an answer to something along these lines: “You need evidence? Did you look at the post?”

    I did. And there is exactly zero verifiable evidence. Are there any verified photos? Material or biological analyses? Spectrography graphs? For now, there is none.

    At this point it’s still just “one dude heard that another dude says it’s totally true”. Once something goes public, we can discuss it. But for now, nothing can be seriously discussed, it’s all speculation.

    Hell, I would love for it to be aliens. But up to this point in our collective history, it’s never aliens.



  • Yeah, it’s definitely very rare. I can’t seem to find that article right now, but I remember reading that these events account for something like 0.1–0.3% of all wildfires. So while insignificant as an actual cause in general, with 100k+ wildfires happening each year it means that a couple of hundreds per year should still be caused by those. Which is still like one every 1-2 days on average.

    Not enough to be a noticeable threat, but enough to cause a pedantic comment mentioning those as existing :)



  • While these are more prevalent, they’re not the only causes. For example, sparks from rock falls also cause natural wildfires, as well as spontaneous combustion. The latter is caused by oxidation, bacterial fermentation and other natural processes.

    Manure piles can spontaneously combust during conditions of extreme heat. Cotton and linen can ignite when they come into contact with polyunsaturated vegetable oils. Hay is quite prone to spontaneous combustion when specific moisture/heat levels are reached.

    So while near densely populated areas idiots are way more likely causes, sometimes forests do self-ignite. And the rate of those events increases during heatwaves.





  • As was mentioned in another comment, it’s a statistical term that measures the standard deviation. It basically tells you how “far” from the center of the bell curve you are with your data points. The higher the sigma, the less likely it is that an observed event was a fluke.

    For example, 1-sigma event has a ~37% chance of being a “coincidence”, and 2-sigma has a chance of about 4.5%.

    In science, 3-sigma (0.135%) is the first publishable certainty, it’s when something becomes significant enough to start a discussion.

    And 5-sigma is the most common threshold for claiming discovery. 5-sigma events have a 0.0000287% chance of being a coincidence or some random happenstance. Or one in 3.5 million.

    Higgs boson discovery was announced after 5-sigma certainty was reached. It means that if that particle didn’t actually exist, the chance of the experiments producing observed results would be 1 in 3.5 mln.