This looks interesting, it's a pity that the example site, https://rq4.dev/, "No JavaScript fingerprinting needed", fails without JavaScript (yes I get it, JS not needed but can be implemented in JS, but still, incongruous).
A friend of mine asked for some help with a design of speaker-stands, 3 thick bits of wood formed into a Z shape, but what angle to cut? That fairly quickly reduced to solving a quadratic, but how to solve that? This was pre-internet, I'd done the derivation at school but that was a while ago, so I spend 2 days working the sod out. I enjoyed it so much that I went to the local University and asked if I could get on the maths degree program, they said yes. That changed my life.
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