These are the features that I'm thinking of as part of a fairly Luddite
"cannon".
------Only STL travel is possible. No FTL, no worm holes.
------No reactionless drives.
------No antigravity.
------The main means of travel is by beam riding ships weighing a few grams and
made of computronium.
------Most forms of sophonce do not rely on quantum states
------Therefore, mental states can be non-destructively copied.
------The galaxy is entirely colonized.
------Therefore we are millions of years in the future.
------Therefore humans are extinct.
------Therefore economic ecology is very post-singularity.
------Fermi was right. All "life" is Terragenetic.
------Sapient beings who are any distance up the eco-econ trophic levels live
a LONG time.
------Interstellar correspondence is reasonable, even at light speed or slower.
------There are many unimaginably smart sapients
------The island nature of each star means that an eco-econ tends to involution.
------Stellar habitats tend to convert matter into huge Dyson swarms.
------Dyson swarms use as much solar energy as possible.
------Solar systems look like big, cold spheres from the outside.
------Eco-econs suffer from relative scarcity.
this may be a dumb question but why does it take millions of years to fill
the galaxy with sentient life, especially if humans are extinct and are the
only sentients, and have greatly extended life spans. wouldn't population
increase exponentially?
jon
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