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The Drake Equation is an attempt to encapsulate all the variables that would be relevant to establishing the number of intelligent civilizations that existed in the Milky Way galaxy and which were broadcasting radio signals at this particular point in time. The Drake Equation is composed of seven terms. The first six are used to compute the rate at which intelligent civilizations are being created and the final term identifies how long each lasts on average as a broadcasting civilization. It is worth stressing that the Drake Equation applies only to intelligent civilizations in the Milky Way galaxy. It does not apply to civilizations in other galaxies because they are too distant to be able to detect their radio signals.
Fermi realized that any civilization with a modest amount of rocket technology and an immodest amount of imperial incentive could rapidly colonize the entire Galaxy. Within ten million years, every star system could be brought under the wing of empire. Ten million years may sound long, but in fact it's quite short compared with the age of the Galaxy, which is roughly ten thousand million years. Colonization of the Milky Way should be a quick exercise.
Since all other lifeforms in the novel are risk-averse and willing to do anything to save themselves, contact of any kind is dangerous, as it almost assuredly would lead to the contacted race wiping out whoever was foolish enough to give away their location. This leads to all civilizations attempting to hide in radio silence.
In the novel, the argument is laid out like this: All life desires to stay alive. There is no way to know if other lifeforms can or will destroy you if given a chance. Lacking assurances, the safest option for any species is to annihilate other life forms before they have a chance to do the same.
The Drake Equation was conceived by Dr. Frank Drake, in 1961. It was an equation designed to estimate the number of advanced technological civilizations that exist in our galaxy.
originally posted by: gortex
a reply to: shawmanfromny
I don't think it's totally the answer but certainly could be part of it , if they follow a similar path to our own they will at some point emit radio on their way to better technologies.
I agree with Hawking and Kaku , silence is golden and a good way of ensuring the survival of our species.
There will be other civilizations like our own out there advertising their presence to all who care to listen so at some point we may hear from them.
Could these drones be scouting for civilizations to conquer and wipe out? Could they be the precursor of a potential alien invasion? Is this even plausible?