[contingencies]

There was almost certainly some forms of relatively advanced seafaring 8000 years ago possibly including skin boats, sails and paddles, ropes, sealants and astronomy. Also, fairly sophisticated metallurgy was widespread with at least silver/iron/gold, possibly bronze. Writing was known to some cultures. Horses, camels and water buffalo were likely all domesticated. Use of drying/smoking for preservation and curing of meat. Yogurt may have been known in some areas. Advanced pottery. Probably nontrivial herbalist / medicinal / architectural / construction knowledge. Plus of course trapping, fishing, textiles, stonework, etc.

[valuearb]

I can believe seafaring, astronomy, and metallurgy. But yogurt? Now you're just pulling my chain.

[clock_tower]

I don't know how much you know about yogurt, so I apologize in advance if this sounds condescending; but yogurt has been eaten since at least the 5000s BC, and is easy to produce, probably even by accident. It's obtained by controlled souring of unpasteurized milk; clabber, which is almost too sour to be edible but is safe to eat if you can stand the taste, comes from spontaneous souring.

Fernand Braudel (in The Structures of Everyday Life) talks of how it was the staple food of the poor in Turkey, and I think in Persia. US commercial yogurt is weak and sugary; the Eastern variety is much more lifelike.