(July 22, 2014 at 11:23 am)Mister Agenda Wrote: Once upon a time I calculated that with a travel capability of 10% of lightspeed, it would take us about 2 million years to colonize the galaxy end-to-end. We don't have to break the laws of physics to occupy the galaxy, but it does presume the will to do so.
The more likely one considers 'advanced aliens' to be in our galaxy, and the more advanced one considers their technology to be, one needs to be more and more mindful of the Fermi Paradox.
If humans are 'it' for technology in our galaxy, then obviously, our galaxy is not colonized as we haven't done it (yet).
For a galaxy with, for instance, 10,000 civilizations with similar nuclear capability we had in the 60s, doesn't it become puzzling in the extreme that not even one of them has population pressures /an urge to colonize?
And as noted, even 10%C allows colonization of our galaxy in far far less time than it has existed.