12-14-2014, 06:26 AM
Interesting thoughts, Todd. I especially didn't consider point a). For some reason (probably due to an "addiction" to the OA-website and its frequent megastructures ) I just assumed that a sufficiently advanced civ would always create at least one megastructure at least in their home solar system. But now that you mention it, this was indeed a baseless assumption on my part.
"Hydrogen is a light, odorless gas, which, given enough time, turns into people." -- Edward Robert Harrison