he: what's the difference between a sensible idea and a stupid idea?

me: hmm.. i think, often it is the implementation.

he: so you're saying... what?

me: some remarkably bad ideas have been carried out very successfully in the past. and some thoroughly brilliant notions have sunk without a trace.

he: doesn't enthusiasm count though?

me: enthusiasm counts for a great deal, as does application. when these two qualities are simultaneously in evidence, it is easy to make tosh seem posh.