Psychoactive drugs give the user the illusion that 'all cannot be better,' folk can think they're being their most imaginitive and 'skilful' at whatever they're occupying themselves with at the point of intoxication. Drugs such as alcohol ( before the depressant effect takes hold ) and cannabis alter, amongst many other things, mood and perception.. creating mild euphoria at best. Is it no wonder that the user thinks they're exeperiencing something very special and conclude they really do operate on a higher plane at such times ?? The evidence speaks for itself and later witnessing of the users 'great ideas' tend to fall flat on their face come morning..not a great idea after all.