Hi Steffen, > Be liberal in what you expect but strict in what you produce
Postel's Law is fitting for the 1970s. Now it just causes problems.
That experience shows that there are negative long-term consequences
to interoperability if an implementation applies Postel's advice.
Correcting the problems caused by divergent behavior in
implementations can be difficult or impossible.
― https://tools.ietf.org/html/draft-thomson-postel-was-wrong-00
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Cheers, Ralph.
