Someone on Pprune has the excellent signature 'If a little knowledge is a dangerous thing, think how dangerous a lot is!'
Pprune is a two-edged sword, for on one hand you can find out an awful lot of information, but on the other hand, for a new student struggling with circuits, it must be very disturbing reading about GFTs gone wrong, frightening moments, etc etc.
Perhaps I'll change my signature to 'When ignorance is bliss, 'tis folly to be wise'