1. i'm asking this because it has never worked whenever I build it. built it once when i was two techs behind the only other civ i had contact with and nothing happened.
2. also what happens if you capture it from a conquered city? do you still get the 'bonus techs'?
3. like the first instance but i captured it instead of having built it. And the civ i captured it from is the only civ i have contact with. what happens? do i get any tech that civ has that i don't have? what if later on i meet the other civs? do i get any more 'free' techs?
4. lastly, if i built it but had no contact with any other civ. what happens? and then again what happens when I finally meet the other civ/s?
thanks.
ps. on a related note - does the "Theory of Evolution" allow you to choose which 2 techs you want for free?

2. also what happens if you capture it from a conquered city? do you still get the 'bonus techs'?
3. like the first instance but i captured it instead of having built it. And the civ i captured it from is the only civ i have contact with. what happens? do i get any tech that civ has that i don't have? what if later on i meet the other civs? do i get any more 'free' techs?
4. lastly, if i built it but had no contact with any other civ. what happens? and then again what happens when I finally meet the other civ/s?
thanks.
ps. on a related note - does the "Theory of Evolution" allow you to choose which 2 techs you want for free?