Reach, PyTeal, Beaker, AlgoKit, and something I've been wondering about, regarding safety

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It is a language for describing languages. It was used to model the AVM. This model is then used by something called the Z3 engine to solve assertions made during static analysis. For example you could make static analyses of TEAL contracts to prove that certain conditions could never happen, like an input being too high, or a security vulnerability ever appearing. This is all quite new Algorand functionality but missing the media radar. I think Algorand wants to fly under it IMHO