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The author's biggest mistake wasn't betting on PHP, it was betting on a single language. He should have learned more languages a long time ago, just to expand his set of tools, and maybe way of thinking.

Besides, learning a new language is fun and not that hard... They are all pretty much the same...

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... until you try to switch paradigms (e.g. to Lisp, Erlang or Haskell).

I agree that learning new languages is very useful. But as analogies go, going from PHP to another imperative language is more like switching dialects than learning a foreign language.

He can switch to a static typed one. I don't know php but it should be a huge mindshift i guess

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