That said, there seems to be a serious reasoning problem in assuming that this is a permanent solution. A species capable of progressing from Galileo to FTL travel in what, 30 years, seems like given another few centuries (if not much, much less) would easily be able to track down the remainder of both alien civilizations via some alternate route.
Consequently it seems like a massive sacrifice to delay the inevitable, or, at least, a sacrifice with highly uncertain probability of preventing that which it seeks to prevent. N... (read more)
This is, perhaps, obsolete by now.
That said, there seems to be a serious reasoning problem in assuming that this is a permanent solution. A species capable of progressing from Galileo to FTL travel in what, 30 years, seems like given another few centuries (if not much, much less) would easily be able to track down the remainder of both alien civilizations via some alternate route.
Consequently it seems like a massive sacrifice to delay the inevitable, or, at least, a sacrifice with highly uncertain probability of preventing that which it seeks to prevent. N... (read more)