If you don't know what critical thinking is, you may wish to read my blog post on critical thinking first.
I think of critical thinking as the foundation of knowledge. While not all knowledge requires critical thinking, like learning a language or perhaps art, other important subjects like science and medicine would be complete nonsense without it.
Maybe I should start by painting a picture of what I imagine the world would be like today if critical thinking did not exist...
Actually this doesn't sound much different from some of the crazy things going on in the world. I imagine a world without critical thinking to be the one that existed just a couple of centuries ago. Medicine was just water (homeopathic), and doctors didn't really cure people. They didn't even know what germs were. They did crazy things like drain people's blood to try to cure them. Sickness was blamed on evil spirits. It was common for women to die giving birth, or for the baby to die, and therefore the average life expectancy was 30 to 40 years. Women were tortured and burned for supposedly being witches, and if you dared disagree with a holy book and say the earth was not the flat centre of the universe, then you were in serious trouble. None of the vaccines we have today existed, so people had to worry about dying of smallpox, or contracting polio.
Well, that's my ideological dream. For now I'm just happy that none of my Facebook friends have shared "Spirit Science" and Deepak Chopra posts in a while!