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Joined 1 year ago
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Cake day: July 4th, 2023

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  • I wish I was as brave and well-spoken as this young man.

    When I was 17-18 I scored really well on a test and the US Air Force tried to recruit me. It was tempting because I was fascinated with aerospace and it would have kickstarted my career and possibly meant no student loans. I’d easily be $100k better off today if I went down that path.

    But I couldn’t imagine myself dropping bombs on potentially innocent people at the behest of some smug politician, or even loading ordinance for someone else to do it. The thought made me sick to my stomach. So I figured out my own path. But that was easy for me, because there was no major conflict at the time, no one threatening me with jail, and no social repercussions from that decision. I have to wonder if I would have made the same decision if it was under Tal Mitnick’s conditions.




  • Lots of people are mentioning old electric car lighters, but not why things burn. The answer is the fire triangle, which just means you need 3 factors: fuel, oxidizer, and heat. Oxygen is obviously the most common oxidizer (hence the name) and basically everywhere in the atmosphere. And any substance that undergoes a sufficiently exothermic reaction will produce enough heat to propagate that oxidation as a chain reaction (i.e. fire) once enough heat is present to start it.

    Not all fuels are equal. Ones that burn slowly will smoulder, while the ones that burn extremely fast explode. Too many unintended and destructive fires occur because people don’t realize when fuel sources are susceptible to heat (even a tiny spark), such as dust in a grain silo, a pile of oily rags, or even a compost heap (which builds up heat due to bacteria breaking down the contents).

    But yes, back to the point, lighters just need to create heat because presumably you already have fuel and oxygen available.