Because the building of ships was, to him, the application of rationality, of reason, thinking, and experimentation, this got him interested in the scientific revolution.

因为造船在他看来,是理性思想的应用,是推理,思考,实验的实际应用,这让他对科学革命有了兴趣

耶鲁公开课 - 欧洲文明课程节选

And then finally, at around age twelve, you could get abstract and scientific reasoning.

最后,大约在十二岁的时候,儿童的抽象推理和科学推理能力得以完善

耶鲁公开课 - 心理学导论课程节选