Quantifying how safe typical Rust code is, by looking at fuzzing metrics: https://www.reddit.com/r/rust/comments/f1ynel/quantitative_data_on_the_safety_of_rust
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Claude asked me a question today: was I looking for an Emacs plugin (because I was talking about elisp) or a Rust program (because I have configured Rust preferences)?
I'm really impressed, it's rare to see LLMs ask follow-up questions.
(I wanted Emacs in this case.)
TIL Tcl has a notion of 'safe interpreters', a mode where you can run untrusted code in a sandbox: https://www.tcl.tk/man/tcl8.4/TclCmd/safe.htm
Not many programming languages have this, but it's way safer to include in the implementation than try to build as a userland library.
Over a sufficiently long time horizon, all code you write is legacy code.