The idea is that you can just keep focusing on lore and story for your guys and manage them with what you have, and if you keep building huts, fishing, etc then I will assign you all the technologies that you can achieve. Of course if you take that into your own hands, the only times I will intervene if it seems highly unprobable (which I doubt you will all do), or when something big happens that isn't in your control, like discovering that some rocks can be melted into metal, etc

I feel that the Civ V tech tree is pretty good and streamlined, good for a basic look at tech tree.

[img]http://i.imgur.com/1P2sik8.png[/img]