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Similarly, when the telephone began its rise, some of the telegraph companies said, "That's not our business; we're telegraph companies." But if they had said, "Hey, we're in the communication business, and here's a new way to communicate," they would have grown rather than died. Compare Western Union to AT&T. And have you heard of those big calculator companies Dietzgen or Pickett? No? Well, they were among the biggest makers of slide rules. But when electronic calculators began to rise, they didn't know what business they were in. They thought they were in the slide rule business, when they were really in the calculator business. They didn't adapt, they didn't accept the challenge of change and opportunity, and they fell.
Searching for evidence of critical thinking in discourse has roots in a definition of critical thinking put forth by Kuhn (1991),  which places more emphasis on the social nature of discussion and knowledge construction. There is limited research on the role of social experience in critical thinking development, but there is some evidence to suggest it is an important factor. For example, research has shown that 3- to 4-year-old children can discern, to some extent, the differential creditability  and expertise  of individuals. Further evidence for the impact of social experience on the development of critical thinking skills comes from work that found that 6- to 7-year-olds from China have similar levels of skepticism to 10- and 11-year-olds in the United States.  If the development of critical thinking skills was solely due to maturation, it is unlikely we would see such dramatic differences across cultures.