For fully funded airline cadets I agree the MCPL is the way to go...for everyone else...give me 1/2 a day and I could teach them the nuts and bolts...30 minutes in a suitably equiped aeroplane and the mystery of the red knob dissappears.
KISS? You'll go a long way to find someone who believes in it more than I do in a practical sense. You'll also go a similar distance to find someone more burdened with a mind that needs to know
why?
It has been known to get me in trouble from time to time