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by bencoder 2554 days ago
Sometimes dangerous situations are averted by pilots realising the controller had made an error, like clearing a plane to cross a runway while another is taking off [0]

This kind of thing might be much harder to catch if clearances are given in text, or even impossible if they are routed only to the specific aircraft.

[0] https://youtu.be/w9lXcDYTg3Q