Originally posted by WeatherOp
But, the thing that don't fit is that they had 64,000 years to get smarter, if you look over the last 6 to 8 thousand years, we have come so fast. And if that was the case, than that means somebody would have woke up one morning and said" Hey I'm gonna build this and this and this. Why didn't it happen sooner? If you would add it up, and 64,000 years ago, we started avancing like we have in the past 6,000 or so. We would have devoloped LS or subspace and we would have huge cruisers flying thru space.
I really don't know about that far. Too much FS.
Well, good night all.
uhhhhh
That's really confusing, but I try to give it one shot.
First, cultural heritage and cultural evolution - memetics. This is basically passing on learned traits and habits, but not on genome level. Your family, teacher or Bob from the neighbouring ghetto teaches you to read, someone else teaches you to ride a bicycle, someone teaches you to shoot an MK-19 AGL, whatever. These things pass along the generations really fast and well; some of the mathematics we study in high school were university level just a couple of centuries ago. Most people have basic understanding about nuclear reactions and stuff, even though it's very new invention.
Cultural evolution is a huge mess, but it's not unique to humans and is actually quite common in fauna. Even oystercatchers - birds, and not very advanced birds - have learned habits. Sea otters have them, peregrine falcons have them, quite a few primates have them. However, it requires pretty sophisticated brain system and capability to learn. Cultural evolution is usually highly advantageus (sp) in evolutionary standards, that is, such a habit will quickly spread through entire population because it gives such a huge bonus to everyday lives.
Then we have the huge increase in human population (which Ghostavo addressed), large brainmass of your average
Homo sapiens, mediocre lifespan and tendency to travel a lot. These, when combined with cultural evolution, create quite an unique combination: an extremely adaptative, highly dispersive and intelligent species with ability to pass on learned traits, with high reproduction rate and a sudden big change in habits a few thousand years ago (switchin to agricultural lifestyle).
However, cultural evolution requires that someone actually invents something that is really beneficial, and the Big Changes are not that that common anyways. Also, notice that the entire world has only pretty recently (last couple hundred of years) become so well-connected that information passes really quickly.
uhh I can address more points but now I am tired. This post propably has gross mistakes somewhere.