I love when people misread Occam's Razor...
Occam's Razor is designed to separate explanations that come to the same result, i.e. Which is more correct, that I bought my bed from a furnature store? Or that it was put in my room by CIA agents, who falsified my memory to make me think that I bought the bed?
Occam's Razor would dictate that the most simple of these explanations, which each come to the same conclusion (There is a bed in my room and I remember buying it,) is the correct one.
Occam's Razor, however, does not rule out theories which come to alternate conclusions.
"But uncertainty and the non-existence of the ether cannot be deduced from Occam's Razor alone. It can separate two theories that make the same predictions, but does not rule out other theories that might make a different prediction. Empirical evidence is also required and Occam himself argued for empiricism, not against it."
"To begin with, we used Occam's razor to separate theories that would predict the same result for all experiments. Now we are trying to choose between theories that make different predictions. This is not what Occam intended."
From the Physics FAQ at Adelaide University.
Nothing in this contradicts my position or use of Occam's Razor in any way, so I'm totally vindicated. For those not quite following along, here's a very simple breakdown:
1. There is a Knossos portal in the nebula.
2. The nebula is a remnant of a supernova.
3. Supernovas blow stuff up.
4. The Knossos is not blown up.
So either
A) The Knossos was built afterwards (no thorny paradoxs here!),
B)The supernova that generated the nebula wasn't that particular system (possible, but unlikely because we only think it GOT blown up by Shivans because the portal led there, and if it didn't get blown up by Shivans then there's no reason to disregard A).
or
C) The Knossos WAS in the system when it went supernova, and survived via a nonsensical ability to enter subspace itself (despite it being the door enabling subspace travel in the first place), via some unknown defense system for which we have no evidence whatsoever, and indeed have evidence supporting it's nonexistence (we blew one up while it sat there happily spinning away).
To clarify on point B some more: I don't know the specifics of nebular dissipation and stellar drift, but it seems to me that the only reason people have this notion of a paradox is the idea that Shivans triggered the nebula's creation via an induced supernova. This premise is supported by the Knossos "leading to the region of space where the Shivans were first encountered", but then explaining how anything in the system that's obviously not of Shivan manufacture survived becomes a paradox. Explaining it away by saying it wasn't
that star in particular that was destroyed would solve the problem, but ignores why we had the problem in the first place: People think the Shivans blew up that system
because it's the "region" where they were first encountered. If it didn't get destroyed then there's really no reason to do mental gymnastics over it.
Thus leading me right back to where we started: Occam's Razor. Huzzah for logic!