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> Don't build anything of any significance in dynamic languages!

Posted on a significant website built in a dynamic language.

I tend to disagree. Static typing can catch some bugs, but most serious errors are not type errors, and the common situation where the type system disallows just enough invalid states for developers to get complacent is the worst of both worlds.

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I'm not a fan of dynamic typing at all (currently maintaining a decade's old e-comm monolith written in Ruby on Rails), but instead of arguing about what bugs are caught where, I've instead switched to arguing from a position of developer experience. The _tooling_ that statically typed languages have is levels above those found in dynamic languages. Runtime errors are runtime errors, but knowing at typing-time that the shape of thing A is what thing B needs is a huge benefit.

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