PCs in Othanas may attempt to "research" social and technological advances. This really boils down to choosing something to "think" about for an extended period. One of the merits of keeping elders around is that they too can be asked to "think" about one thing. To successfully develop a "thought," each week a PC (and the elders) are permitted to make an IQ check. If they succeed, they get one point towards the thought.
When a thought accrues enough successes, it is considered complete and the tribe now has access to it.
Some Sample Thoughts
Tattoos: 4 points
Animal Domestication: 50 points