Anybody who's been taught to think for themselves, and to critically analyze what they're presented with in order to come up with their own conclusions is most emphatically not an idiot.
And the public school system is going to teach every little perfect child how to think critically, and "for themselves," because they're all little perfect blank sheets that can be folded and shaped into little perfect academic origami. Right. As I said before - no one comes into this world free of bias and free of influence. You can't retrain someone who's been brought up not to think for themselves, to do so, at least not without a lot of specific, individualized help that the education system doesn't have the resources to provide.
Now, on to your "rote memorization" issue that I didn't even bring up. So, you think it's okay that 40% of Americans or whatever can't locate Iraq on a map, because it's all right, they can just look it up on Wikipedia? What if they need that information right away? Maybe it's something more relevant, like "what are the three necessary elements to produce fire?"
Especially in real-time debates like ID/Creationism/Evolution, it does matter that you can remember something that can be looked up. If you don't, you end up looking like an idiot, even if you aren't.
Whether you like it or not, rote memorization sharpens the mind. Rote memorization provides basic tools and understanding that can be used to craft what you call "truth." Frankly, I'm really glad my teachers drilled my multiplication tables into me. Makes my life a lot easier. I'm glad I memorized all the words I know, so that I understand what I'm reading without a dictionary. I'm glad that I memorized historical and mythological events, because when I'm listening to someone speak or reading their work, I don't have to run to a library or a computer every five seconds to get the backstory required to understand symbolism or allegory.
I've heard this "you don't need to know things that you can look up" before, and frankly, I think it's a crock. It's something that applies only at the upper echelons of academia and research, where there's just too much information to bother memorizing, and the time spent memorizing doesn't end up saving you time down the road.
When you're in any sort of high-pressure situation, memorization is what stays with you. It's the brain's version of "muscle memory." And seeing as we live in a high-speed, high-pressure, high-information density world, it's important that we have reliable, instantaneous access to information. Having facts, figures, and general knowledge memorized lubricates communication, and really, makes our world function.
Critical thinking flows out of this information. How can you think critically if you don't have pieces of information to put together? Some people make the connections, some people don't.
Again, if you figure out some magical way to impart critical thinking skills to people, let the education system know about it right away. I'm guessing, though, that there are already armies of developmental psychologists working on that very issue.