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2 points by oconnor0 4757 days ago | link | parent

The problem is that as people learn the language they will build mental maps of what works and what doesn't and in the process will write code that depends on things that could legitimately be considered bugs or arbitrary side effects of the current implementation.

Whether or not this matters to you or even should matter is another concern, but this has been a spot of contention for languages like Python and OCaml whose spec is the code.