When I was in school, they taught us the Tongue Map

For the uninitiated: the theory is that only certain sections of the tongue taste certain things, such as sweetness, sourness, bitterness, etc. It's also total bullshit.

I have heard of schools teaching this as a caution against blindly trusting authority. It's easily disprovable with a simple experiment, and we even did that in class. Simple stuff, like placing sugar on different parts of your tongue to see if you can only taste sweets in the sweet zone.

I told my teacher that I didn't taste any difference, it was all the same. She told me I must be wrong because that's not what it says in the book. That itself could have been a lesson about trusting authority, and I think that at the end of the day you could tell your class it was all an experiment. But that never happened and is a pretty heavy thing to lay on a six-year old.

Either way though, it's a valuable lesson in critical thought and blind trust.