When d'andre was 5 months old, he looked at a toy train, but when his view of the train was blocked, he did not search for it. now that he is 9 months old, he does search for it, reflecting his development of: ?

Why does c. wright mills identify critical thinking as one of the most important criteria for the development of intellectual craftsmanship? why is constantly being aware of the biased nature of your reactions and interactions (what c. wright mills calls self-reflexive) key to the development of that critical thinking? finally, why is keeping a file important, how can it lean to intellectual curiosity which can foster critical thinking and to develop a keen analytical mind?