I think this article is referring to state machines before State Charts and David's XState library, as he mentions at the end that his next article will introduce what David came up with.
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Not saying this can't be a problem, but your example is addressed with parallel state nodes: xstate.js.org/docs/guides/parallel...
I think this article is referring to state machines before State Charts and David's XState library, as he mentions at the end that his next article will introduce what David came up with.