Final answer:
John Dewey believed that education should focus on developing critical thinking skills through active learning and problem-solving.
Step-by-step explanation:
The philosopher who was convinced that the purpose of education is to develop critical thinking is John Dewey. Dewey believed that education should focus on fostering active learning, problem-solving skills, and inquiry-based methods. He argued that students should learn by doing and that education should enable individuals to think critically and apply their knowledge in practical situations.
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