Strange science focus for AI

[LumenAngel]

During prehistoric, AI focus nearly always the cheaper tech, or what look like the most useful.
But after having the Sedentary tech, they ALL focus on iron working, forgeting all the others tech. But these tech have a big cost in science and will trigger the lost of science from the Stone work building. So, they all have iron working earlier than me, but after that, the "lost time" for other tech let them far behind me.
I try another game in normal speed, Immortal AI and same thing again : look like they all focus bronze/iron working over the others tech. And ir's not really a goos strategy (and a really bad one if you finally have no copper and no iron near you)

I m not sure about this, but I thing AI overestimate them, maybe because there is a lot of wonders and a nex ressource revealed in these tech

 

[Koshling]

During prehistoric, AI focus nearly always the cheaper tech, or what look like the most useful.
But after having the Sedentary tech, they ALL focus on iron working, forgeting all the others tech. But these tech have a big cost in science and will trigger the lost of science from the Stone work building. So, they all have iron working earlier than me, but after that, the "lost time" for other tech let them far behind me.
I try another game in normal speed, Immortal AI and same thing again : look like they all focus bronze/iron working over the others tech. And ir's not really a goos strategy (and a really bad one if you finally have no copper and no iron near you)

I m not sure about this, but I thing AI overestimate them, maybe because there is a lot of wonders and a nex ressource revealed in these tech

It's because of the large number of powerful units that require copper/iron I think, plus they might not be fully accounting the obsoleting effects (I need to look into that)