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Another story of Galileo is also a very typical one to explain the importance of exploring what is familiar to us. It is known to us all that Aristotle is a great philosopher in ancient Greece and is widely regarded as the most erudite mind so far. His theories, as a result, are firmly believed by almost everyone in the Middle Age. Among all these theories, one theory that the velocities of two falling weights are proportional to their weights enjoyed widespread familiarity among the public. (熟悉的东西是什么)
At that time, Galileo, an unknown scientist, was absorbed in books of Aristotle. However, instead of totally copying the thoughts of him, Galileo developed his own way of thinking and gave priority to the effect of experimentation on science, doubting the feasibility of the widely known theory about the speed of falling objects. (伽利略研究熟悉的东西)
He finally decided to find out the truth by doing an experiment on the Leaning Tower of Pisa in front of the public. During the experiment, Galileo dropped two iron balls of different weights to the ground and everybody present witnessed the historic moment that the two balls reached the ground at exactly the same time. (伽利略挑战熟悉的理论)
That experiment witnessed the birth of one of the greatest discoveries in the field of science, namely, the theory that the velocities of two falling objects are not related to their weights. More important is the fact that this finding weakens the blind trust of the public toward the authority and paved the way for the widespread use of experimentation in testing the practicability of a theory.
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