Currently the title says "Web-based IBM 1620 emulator and IPL-V from 1963" until HN's title policy inevitably vandalizes it to remove the informative part. But, to give further context on IPL-V, IPL (I think actually IPL-IV) was key to some early AI research, but the main reason it's interesting in 02026 is that it's what inspired Lisp. It's a terrible programming language by today's standards, and the manual is a horrible slog, but you can see the seed of almost every programming language popular today in it.
True enough that IPL inspired Lisp (along with Church’s Lambda Calculus), but, to my mind, what is interesting about IPL-* is that the first true AIs and Cognitive Models were written in it/them, esp The Logic Theorist, which was the first heuristic search program, and which actually improved upon proofs by some of the most famous logicians of the time. David Moews has made several of the original IPL Logic Theorist programs run again (although not on this 1620 platfor’. . . Yet!) :: <a href="https://news.ycombinator.com/item?id=48116935">https://news.ycombinator.com/item?id=48116935
kragen · · focus · HN ↗
abrax3141 · · focus · HN ↗