Through the in-depth study of the communication between dolphins, scientists have found that Zipf's law and the concept of entropy in information theory can well serve for the analysis of alien signals  After receiving any suspicious signal outside the earth, we should first use Zipf's law to analyze whether there is a certain slope straight line feature, and if there is a certain feature, it is proved that it is not meaningless noise  Then entropy analysis is carried out so that the complexity of the communication can be known without deciphering the signal
Assuming that a suspicious signal intercepted not only has a straight line with a slope of-1 in the Zipf coordinate system, but also has a high-order entropy, then it is very likely that the signal is the extraterrestrial civilization we have been looking for for a long time
How to use Zipf's Law and the concept of Entropy to analyze alien signals.