That's because the AI always sees your cities and your tech (cheating);
Well, I'm afraid that's just false. I've played many hundreds of hours--I shudder to think how many--and I usually alternate between Prince, King, and Emperor. And, as I've said, I'm always wonder-hungry. I don't always get all the Wonders I want, of course!, at least not on Emperor, but I've never once been beaten to a Wonder after burning a GE for it.For those who said it never happened , they either played a few games or never past king.
This happens to me plenty of times.
But once, this was the worst ever. I didn't pop a great engineer. I played on king.
I pop Masonry, Pottery and writing from ancient ruins and enough faith from ancient ruins which gave me monument to the gods I wasl like oh my gawd are you kidding me, Grassland GOld mine and marble.. Plus aristocracy.
I took 12 turns to hardbuild the great library and then when there was one turn left, I got beaten to it by one turn. Goddammit AI, why can't you just let me have it at least once. Was turn 30-40. I ragequited but then I changed my mind immediately.
i wanted to return the favor to the guy who beat me to the great library by one turn.. by beating the AIs to every single ancient/classical/medieval wonders.
I was enjoying bright red "we covet your land and wonders negative modifiers from the AI" :3
Then i declared vengeance accomplished and quit. Yes I even got stuff like Petra, Alhambra, Parthenon, etc the wonders that humans normally never get only AIs.
Sure they beat me to the great library but in return i beat them to every other wonder at great expense.
My cities be rolling in bling and there's nothing that great library AI hogging can do about it.
Oh man, if I had a dollar for every time the AI beat me to the GL by one freakin' turn...if you're not finishing it before 30 on Emperor, then there's no way. Usually around 26-28 with 22 civs.
A buddy pointed out to me (because I play in strategic mode) that in standard view, you can see the foundation of any building that any city is building as long as you have LOS on said city... And if you know your wonders you can see with your eyeholes who is building what so of course the AI gets a similar effect. Same goes for regular buildings too, the AI knows you have writing already because it can actually SEE your library.
I was playing a sandbox experimental game to try strategies for getting one of the renaissance wonders (forget which one). Cathy beat me by 1 turn, so I reloaded some turns back and added another hill to finish a turn early, and she beat me by 1 turn again. So I reloaded to the turn I started on the wonder and full hammer focused on it. Cathy blew an engineer on hers...
The AI does watch you with spies, and will change their tactics to make you waste maximal turns on a woder
I always save the game before I use a GE because I end up rage quitting if I do lose the wonder
no, not only that, the AI "sees" your research bar (it always knows what turn you are going to finish researching the tech; sometimes it will finish the wonder the turn you finish the tech and if you were stupid enough to burn a GE on it right away, it will get wasted), and it sees exactly how many turns left to complete the wonder, way before spies become available.
The way AIs do it is if they beat you to the tech, they might devote some turns on the wonder, then go produce military or other things whatever... but it always calculate that it will beat you by one turn. (so it can be foiled by GS+GE one-two combo, or tree chop, or interfaith dialogue)