Thank you, and congratulations, on this whole endeavor of yours!
Long may it prosper.
One response to the Fermi Paradox that I have never yet seen anyone propose is that, perhaps,
we have already detected radio signals from alien civilizations in our galaxy, many times over:
the so-called “strong candidate” signals, which have all the desired characteristics
except that they don’t repeat, or, rather, that WE don’t catch any followups
from the same region of sky.
Imagine that there were, in fact, numerous sites in our galaxy with a high-tech presence,
that were, indeed, chatting away with other such sites.
The senders would know in which direction to aim their signals,
but said directions would be continuously changing, because everything in our galaxy moves,
mostly in closed orbits, and none of those transmissions are aimed at us.
We simply catch a piece of transmission every time we happen to be in front of the intended recipient,
and we lose the signal as soon as the alignment breaks, alignment which may not happen again for many many years.
It surprises me that not even SETI spokespeople talk about this possibility, because,
at this point, there is surely enough data to conduct sophisticated statistical tests
to see if the fade-in, fade-out curves distribute in a way such as one should expect.
Have you folks ever asked someone like Seth Shostak about this?