If you just care about brain teasers, caffeine is quite effective at inducing small temporary increases in cognitive ability and is totally safe. Try having a b

If you just care about brain teasers, caffeine is quite effective at inducing small temporary increases in cognitive ability and is totally safe. Try having a big 'ol cup of joe before interviews. If you want to learn how to think more critically, you need to force yourself to continuously engage new ideas and learn to recognize an author's motivations and biases while still evaluating their arguments objectively, putting aside your own past conclusions temporarily in order to understand their argument. Then do the same for ideas you have previously agreed with, and see which ideas hold up to scrutiny. Only then can you truly call conclusions your own.