I found this back in 1.1, pissed off at seeing it FIXED for 1.2
This one time I was playing along, trying to keep a low profile and go for a culture victory, I was constructing a key Super Project (Eyes of the Universe or something), but then found out that the A.I. was also constructing the same thing, AND it was closer to completing it. So I had a choice, a) pay for it through one of the four 'corporations' or

lose the project (along with all those acumulated turns). But here's the thing, I
hate having my income diminished for X weeks, yet the 'full payment' company's option was gonna be like, 6000 bc when I only had 100 bc and my income around 30bc/turn (economics aren't my thing). So I figure, what the hell, pay for it and just hit 'turn' 20 times. But what happens? I go from +100bc to -5900bc, then the next turn
SURPRISE! I have -2000 bc.
Lucky me, from then on, it was like having this magical credit card that could make debt go away, it opened the door for all sorts of exploits. A good one in particular would be cranking out a dozen Huge ship 'shells' (not even engines), then upgrading them to the MAX (ultimate weapons and armor), even if it meant paying 300k bc, since by the next turn, it would be only -2000 bc in my treasury. It also allowed me to have any (every) Super Project I wanted!
But what do I find out the other day after installing 1.2? Stardock's fixed something that wasn't broken! (yeah it's cheating, but so is giving the AI bonuses in the higher difficulties IMO)
That's it, you can stop reading now.