There are people interested in this setting, but is there a technically 100% sure way of making this happen?
So, there are four ways of getting a technology:
1. Researching it yourself
2. Getting it from a treaty
3. Stealing with a diplomat
4. Conquering it with a city
We want to keep 1., so let's discuss other three.
2. can be removed by using techloss setting (if I got it right; if I didn't, please correct me)
3. can be removed by Not_Tech_Source setting (if I got it.... see above)
4. is a tricky one. There is the conquercost setting, but it doesn't actually prevent getting the tech, only throws back your current research. In the end, you can happily go around conquering cities and thus gaining tech from other people and leaving your science far in the negative, never using it again.
So, a few things can be argued here:
This is not a risk-free strategy. It is not trivial to conquer cities, this way you can never go ahead of other people and, once you hit a wall, meaning, you encounter someone you can't conquer because he is prepared militarily and, at the same time, doesn't have his science far in the negative, you'll die.
However, how exactly is the amount of bulbs calculated? Does it depend on the tech you're currently researching or on the tech you conquered? If it is the previous, then you can simply set your research to some low-level cheap technology and not lose a lot of your research while conquring, and then, when you're done, simply switch science back on, recuperate quickly and continue playing.
Anyone have some experience with this? Also, are there some settings I've missed?