Childs simple problem Child goes to refrigerator to get milk and finds none. Child then yells "Mom I need some Milk", and then drinks all of the orange juice for breakfast tomorrow. The time is 2:59pm Sunday. Later when they return, by magic Milk and orange juice reappear. But what it really wanted now was some yogurt.

Adult simple problem Your wife says,"Honey, we need some milk for dinner." It's 3pm on a Sunday afternoon. On the surface, that statement requires no action at all. It's just a statement of a supposed fact. Is it a fact? What if she were to cook something else for dinner that didn't need milk? Are we actually out of milk, or did she miss that extra half-gallon in the back of the refrigerator? Did the darn kids drink up all the OJ again? And so what if we do need milk? What does that mean to you? Why did she make that statement? Does it mean she's about to leave to go get some? Does it mean you have to go get some? If you have to go get it, when does she need it by? Must you go right now? Is there something else you are/want to/should be doing right now? Do you have time to do that and get milk before dinner? How important is what you're doing right now? And where do you get milk? And if you have to leave to get it, how do you get there? What requirements are there for getting milk? If you go somewhere, will they just give it to you? Do you need money? How much? And what kind of milk is needed? Are there different kinds? If it requires money, do you have it? Where? Must you go get money as well? What happens if you don't go get the milk? What happens if you tell her to go get the milk herself? If you need to get there and getting there requires that you drive an automobile, what's needed to do that? Do you need keys? Where are they? Do you need gas? What kind of gas? How much? Where do you get it? Do you have to pay for it? Has the teenager got you blocked in again? We haven't even gotten out the door yet. And each one of these questions requires a type of reasoning that's far more than three-dimensional. Even the act of asking the questions requires deep reasoning, completely aside from actually answering them. And the solution to each question requires an understanding of _concepts_ and has its own weight. And really, I've oversimplified the whole problem. And this is a very simple human problem. This is a idea from my twisted brother that I've expanded on.