世界上许多发明创造都来源于“疑问”。课文《两个铁球同时着地》讲到,意大利物理学家伽利略对古希腊科学家亚里斯多德“重物体比轻物体落得快”的理论提出了疑问。伽利略的“生疑”是运用了科学的思维方法——“两面神”思维方法。原来,古罗马的门神,有两副表情截然不同的面孔,并且能从两个相反的方向去观察事物,人们称之为“两面神”。 Many inventions in the world come from “doubt.” The text “Two Iron Balls At the Same Time” mentioned that Italian physicist Galileo questioned Aristotle, the ancient Greek scientist, “the theory that heavy objects fall faster than light objects.” Galileo's “suspicion” is the use of a scientific method of thinking - “God” thinking method. It turned out that the ancient Roman god, with two completely different facial expressions, and from two opposite directions to observe things, people call it “the two gods.”