Editorials & Other Articles

Earth never stops talking and the more civilized races in the universe all consider it rude to interrupt.

A second and more likely theory is based on accurate timing. With accurate timing a carrier wave is not needed to transmit data, and the amount of energy needed is considerably less. Without the key, at a distance it would be hard to extract information from background noise.

There is another good possibility. It is quite likely that our radio visibility will be nearly gone in less than a hundred years. As we are now mostly cable and moving to optical cable a lot of our signals are becoming quiet at a distance. 5g as far as I know would only be detectable from a relatively close distance and would require large arrays pointed in our direction and located in the right place. https://www.scientificamerican.com/article/is-e-t-eavesdropping-on-our-phone-calls/

So if other races match ours for technical progress, the window to spot them may be short and relatively small.