Hello Layth :) (ayoubantitastronomy)

Race #458

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Official speed 71.21 wpm (45.33 seconds elapsed during race)
Race Start November 18, 2021 9:35:37pm UTC
Race Finish November 18, 2021 9:36:22pm UTC
Outcome Win (1 of 5)
Accuracy 95.0%
Points 58.16
Text #3811410 (Length: 269 characters)

Any physical theory is always provisional, in the sense that it is only a hypothesis: you can never prove it. No matter how many times the results of experiments agree with some theory, you can never be sure that the next time the result will not contradict the theory.