Day 1 at @poplconf had a bunch of interesting talks at VMCAI (Verification, Model Checking, and Abstract Interpretation). https://popl20.sigplan.org/home/VMCAI-2020
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I asked Hermes Agent to change how it set thread titles, and it patched its own source code!
Self modifying code is hard to reason about even in a deterministic environment. I'd already limited Hermes access to the todoist API and web search out of an abundance of caution.
My favourite programming model is single machine, single thread. It's so much easier to reason about when you have fewer failure possibilities.