adam_grif wrote...
1. Irrelevant. We're arguing using in-universe logic and science. In-universe, the science says that drive core charges build up and **** starts happening if it does. In universe, ships need fuel to get places.
2. No it's not. Please don't teach a math class.
If you attempt to divide by zero you don't get a defined answer, because the question doesn't make sense. If I have 8 pieces of pie, and I divide it evenly amongst 0 people, how many pieces of pie does each of the 0 people get? Do each of the 0 people get infinite slices of pie? That can't be right, there are only 8 slices of pie! Do each of them get 8? But that can't be right, there's nobody to give it to! Does each person get 0 pieces of pie? But then you're not even dividing the pie up...
The answer is undefined.
Your rebuttal on zero is correct obviously

I want to raise the point that the main danger of drive core charge building up is to the crew and sensitive equipment. Reapers have no crew, and it may be possible without getting too crazy to protect sensitive equipment. Reapers don't need much fuel to maintain FTL speeds. All they need is enough to accelerate/decelerate and then enough to maintain the energy requirements for their drive core.
A ship with a crew is not going to be able to cruise for very long at FTL speeds because of drive charge reasons. So they're stuck accelerating, decelerating, discharging, reaccelerating, decelerating, discharging, etc. That's going to require lots of fuel. But if you assume you can accelerate to what, 100s of times light speed? And then just drift by means of inertia and a huge drive core that doesn't need to discharge, the Reapers could be coming quite fast. Not mass relay fast, but within a few years fast.
In my opinion, the reason for the Citadel relay is not to ensure they can return in a timely manner, but to ensure there is always a surprise attack location that can decapitate galactic civilization. I don't think the Reapers are so numerous that they can handle the galaxy without divide and conquer tactics.