Waymo has been testing fully driverless cars (i.e. without a human ready to intervene) since 2017! https://arstechnica.com/cars/2017/12/driverless-cars-became-a-reality-in-2017-and-hardly-anyone-noticed/
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Rust and RISC-V both feel like they've reached critical mass and I'd guess that they'll be used more in 5 years than they are today.
What other technologies fit this description?
Some excellent safety improvements in C++26: hardening the standard library against out-of-bounds bugs, and a safer semantics for uninitialised local variables:
LLMs have been really helpful for me porting some JS projects to TS.
Since the types are erased and annotations are optional, I can go gradually and safely with more minimal human oversight.
(I'm not sure if it'll significantly help robustness, but it's lovely for navigation.)