ABTW I'm not convinced there are any stupid questions

This depends on what you mean by "stupid". (The word is used in so many different ways...) There are certainly such things as uninformed questions. Most "normal" questions could be considered in this category (as opposed to didactic and rhetorical questions, though those can sometimes be uninformed as well, but that's another topic). Also there are questions that don't lead directly to the answer that is desired (though often they lead to other questions that may get there eventually). Then there are questions raised only to cause trouble, not out of any desire to learn. Any of could be considered "stupid" in one sense or another of that term, though only the last category ought perhaps not to be asked.

$;=sub{$/};@;=map{my($a,$b)=($_,$;);$;=sub{$a.$b->()}}
split//,".rekcah lreP rehtona tsuJ";$\=$ ;->();print$/
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