As far as scientists' being high priests of some arcane religion, one of the treats I can give my seven-year-old is "let's do an experiment." Sure, the experiments we do are basic ones that have been reproduced probably millions of times by bored kids over the decades, but so what? The scientific method still applies, and it's new to him!
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Gillian
"Now everyone was giving her that kind of look UFOlogists get when they suddenly say, 'Hey, if you shade your eyes you can see it is just a flock of geese after all.'"
"You can't erase icing."
"I can't believe it doesn't work! I found it on the internet, man!"