...Let there be no mistake. METI is a very different thing than passively sifting for signals from the outer space. Carl Sagan, one of the greatest SETI supporters and a deep believer in the notion of altruistic alien civilizations, called such a move deeply unwise and immature. (Even Frank Drake, who famously sent the "Arecibo Message" toward the Andromeda Galaxy in 1974, considered "Active SETI" to be, at best, a stunt and generally a waste of time.)

Sagan -- along with early SETI pioneer Philip Morrison -- recommended that the newest children in a strange and uncertain cosmos should listen quietly for a long time, patiently learning about the universe and comparing notes, before shouting into an unknown jungle that we do not understand.

Alas. To date, groups that plan to engage in METI have done the opposite, keeping a low profile and avoiding discussion with experts in near-related fields like exobiology, bioastronomy, or evolutionary biology... or even historians who are knowledgeable about human "first-contact". Especially biologists and historians. (For reasons that will become clear.)

(In The Third Chimpanzee, Jared Diamond offers an essay on the risks of attempting to contact ETIs, based on the history of what happened on Earth whenever more advanced civilizations encountered less advanced ones... or indeed, when the same thing happens during contact between species that evolved in differing ecosystems. The results are often not good: in inter-human relations slavery, colonialism, etc. Among contacting species: extinction.)...In Russia, the pro-METI consensus is apparently founded upon a quaint doctrine from the 1930s maintaining that all advanced civilizations must naturally and automatically be both altruistic and socialist. This Soviet Era dogma — now stripped of socialist or Lysenkoist imagery — still insists that technologically adept aliens can only be motivated by Universal Altruism (UA). The Russian METI group, among the most eager to broadcast into space, dismisses any other concept as childishly apprehensive "science fiction".

(Ironically Dr. Alexander Zaitsev has modified this doctrine to suggest that advanced aliens are not only altruistic but also cowardly — thus explaining their failure (so far) to create beacons or beam messages at Earth. He reasons that the youngest and most ignorant technological race (humanity) is behooved to overcome this universal cowardice by boldly announcing ourselves.)

(This is not the place to analyze the logical faults of this assumption. I have a whack at it in a different article: Let me just offer one thought here. If aliens are so advanced and altruistic... and yet are choosing to remain silent... should we not consider following their example and doing likewise? At least for a little while? Is it possible that they are silent because they know something we don't know?)...

"Earth civilization is already glaringly visible in radio, so it's too late to stay silent."

This widely-held supposition was, in fact, decisively disproved years ago, in a paper written by Dr. Shostak himself! In fact, even military radars and television signals appear to dissipate below interstellar noise levels within just a few light years. Certainly they are far less visible — by many orders of magnitude — than a directed beam from any of Earth's large, or even intermediate, radio telescopes.

Moreover, this reasoning is illogical, since METI's whole purpose is to draw attention to Earth by dramatically increasing our visibility over whatever baseline value it currently has. If it's already "too late", then what are they aiming to achieve?