Don't peek into the kitchen of your favourite restaurant

I have always heard that said to indicate the fact that once you see first hand how things are made, you are most likely to lose your enjoyment of "the thing" going forward. This is true for your favourite restaurant dish as it is for your favourite magic trick.

Not that I enjoy the current state of the English curriculum adopted by the Texas public schools, but this sound bite does not install confidence in our public school system.