> >If the product had a 1c blocking diode, not the wall wart
> 
> Ah.. My designs will either survive, or work on wrong polarity DC
> or AC.

Yes, I like the consumer-friendly approach too. However I take
your point about standards. If I make my product indestructable,
would that lead a customer to take liberties with other products ?
It never ceases to amaze me how reckless people can be when
they don't know what they're doing. "Wonder if it'll work ?"
"Wonder if it'll blow up ?". Then they do it anyway and pfffft

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