[ExI] kepler study says 8.8e9 earthlike planets

[Eugen Leitl]

On Thu, Nov 07, 2013 at 09:47:52AM -0500, Rafal Smigrodzki wrote:

> ### Even this is kinda hard to believe as a Great Filter - 10e20
> potential civilizations, and not a single one strays from the narrow

Nobody has any probability for civilization nucleation density,
until there's at least one sample not causally correlated with
us.

> path? Also, if a civ thinks it makes sense to eat your own solar
> system and make it into a brain, why not eat the neighboring one too,
> and then next one and the next one?

Precisely. There's never a single star turning ~AU FIR blackbody,
nor even a single galaxy. There would be spherical voids impossible
to miss -- except the expansion is relativistic, so you don't see
them until you're suddenly