> Ruby can do is to enforce having '()'  for method invocation.

How would that make them better programmers?

Enforcing behaviour sounds like the wrong way to go. You'd end up like
python - with fewers abilities to ever escape the mindset. And no way
to type "quit" in interactive python mode leading to quit that damn 
thi** ;-)

Maybe the person in question just does not know either ruby, or the 
parent class(es) he is using?
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