Had 10 cities. Was going for science victory. Had a couple of space ship parts built. Had 2 Great Engineers and was about to buy the third one with faith, to rush build the last 3 parts. Also had 3 Great Scientists saved. I was going to bulb GSs, obviously. But even after bulbing, I would have been ~12 turns away from the last tech required. I decided to donate all my cities (they were generating science w/ science focus). With each city increasing science by 5% (1.05^9 = 1.55), giving away all cities would make the GS 55% more powerful. The remaining science after 3 bulbings, was enough to be covered by the capital bpt in 3 turns. So I expected to finish the game in total of 4 turns. But NO. It doesn't work. GIving away cities does not lower the costs of techs! WHY?