Just to be clear, I was not accusing or disagreeing with anything that you said. I was just pointing out a common logic flaw that tends to attach itself any time people link the words ‘Technology’ and ‘Advanced/Primative’.A poor choice of words on my part. Perhaps "discovering" or "employing" or "making use of" rather than "making a leap of logic" would be better wording. I realize that the use or non-use of a particular set of technologies is not a measure of Intelligence.
An adventurer walks into a starport bar and sees a barbarian with his spear leaned against the wall and a spacer with a gauss rifle near his chair playing cards … which one would you instinctively guess is more intelligent? I would (probably incorrectly) assume that the spacer was smarter. After all the guy from a TL 12 world must know more than the guy from a TL 2 world, right?
I have a nagging suspicion that the cultural and technological progression may not be truly independent. It seems that every few TLs, some critical decision point is reached where the society as a whole must either embrace a new technology and completely transform the character of the society and how the people define themselves … or not.While I agree with your observations above, I think it is important to keep Technological Level distinct from cultural considerations, as far as it is possible to do so.
Even if a society has deliberately chosen to not utilize a given set of technologies due to cultural considerations, I would still rate their TL based on what they actually are choosing to employ. In the OTU, there are a number of worlds that have deliberately turned their backs on technology to lead a simpler lifestyle. Even though these cultures are quite aware of more advanced technologies, their worlds' UWPs reflect what they actually utilize in practice, rather than what they could choose to employ given a different cultural outlook.
Or have I entirely missed the point you are trying to make?
TL 0-1 seems like one of those critical decision points. The decision to settle into permanent communities, grow crops, and pursue infrastructure intensive crafts (it is hard to smelt ore while following the herds). So the Social decision makes the Technological tools possible … and the combination changes virtually everything about how the people live and work.
TL 3-4 seems like another critical point. Archeology indicates that ancient Greece and Rome had tools as intricate as any 18 th century clockmaker. They had the tools to build a crude railroad, but they never did. I suspect that Rome was not prepared to transform its agricultural core identity to an Industrial society. The tools were there for Rome to jump to TL 4, but not the social revolution to enable those tools to be exploited.
Fast forward to the 1800’s. Society had been changed by the Enlightenment, broad literacy and a love for new mechanical technology. People were willing to mechanize farms (to reduce farm labor) and transform from a nation of farmers (80% of the population at TL 3) to a nation of factory workers (70% of the population at TL 4).
Beyond this it becomes more speculative, but I think that the shift to automated production is another critical period, as will be the shift to a space-based economy and the later transition to a holographic VR society … which I ballpark IMTU at TL 6-7, TL 9-10 and TL 12-13.
So I tend to see TLs as a series of Evolutionary changes followed by an abrupt Revolutionary change. Within the evolutionary steps, Tool^2 probably dominates. At the Revolutionary steps, the social impact cannot be ignored.
Here is an interesting fact to think about. A modern Amish Farm operates at about TL 4 and produces crops at a cost per bushel slightly lower than a modern commercial farm (operating at TL 7-8). The Amish farm requires dramatically more labor and produces far less per acre, but its operating costs are also significantly lower. Take from that factoid whatever you wish.