Thanks very much for the additional depth on what “old and clunky” could mean in cryptography. I am no expert in this area, and I agree that all these nightmare scenarios you mention (and many more, I’m sure) are very concerning. I prefer to use old (tested and tried) Unix/BSD tools for interactive development rather than their latest rewrites or modern GUIs. In drug design, I’d rather have a clearly understood 30-year-old assay with known failure modes rather than the latest promising experiment that may still have unknown failure modes. But generally speaking, I am a sucker for new tech and I seem to never learn to stop playing with new shiny toys. In a field with explosive growth field, like machine learning, at least I can use the benchmarks against the state of the art to help me decide how or when to advance technologies (every month or so, it seems). So.. is it worthwhile to learn to use age?