What if we update on the age of the universe? Imagine that the normal course of events after a high tech civilization arises is for it to grab all the free energy it can as fast as it can and universes where life forms easily do not have civilizations at our level of development at the current age of the universe.
Panspermia implies that civilizations will appear earlier, because the number of planets with life is growing exponentially. This also means that first civilizations will likely be of approximately the same age. This idea was used by the proponents of SETI as justification of the search of radiosignals inside our Galaxy.
What if we update on the age of the universe? Imagine that the normal course of events after a high tech civilization arises is for it to grab all the free energy it can as fast as it can and universes where life forms easily do not have civilizations at our level of development at the current age of the universe.
Panspermia implies that civilizations will appear earlier, because the number of planets with life is growing exponentially. This also means that first civilizations will likely be of approximately the same age. This idea was used by the proponents of SETI as justification of the search of radiosignals inside our Galaxy.