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> They need a much better idea of time (such as approaches to McCarthy's fluents).

I am not sure what the time problem is for functional programming, but I reckon the Elm language/framework solves problems with time in a very elegant way with it's flavour of FRP and Signals.

In Elm, you can play back your UI interactions in a debugger as they happened and watch the variables as they would have been!



Worth looking at Bob Balzer's EXDAMS system at Rand in the late 60s early 70s.


Google search gives a lot of gibberish on those terms. Here's the paper for anyone trying to follow-up on that comment:

https://www.computer.org/csdl/proceedings/afips/1969/5073/00...




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