# Civilization Technological Rank Wiki Question

We often get questions about whether (my civilization) can do this or that. While they are fun to answer, there is the tedious and seemingly inevitable bit about asking the OP about the desired technological level of the society.

I'm thinking of a community wiki post whereby we create a finely graded Kardashev scale, with examples at each interval of the presumable (science-based) capabilities of such civilizations. So going from Type 0 to Type 3 (or even 4) in .1 increments using the Sagan logarithmic scale interpretation.

$\huge{K=\frac{log_{10}P-6}{10}}$

where K is a civilization's Kardashev rating and P is the power used by that civilization in watts. Thus humanity cca 2011 would be

${\frac{log_{10}(17.4\times10^{12})-6}{10}}=\frac{13.24-6}{10}\approx0.7$ on the continuous Kardashev scale.

There is already at least one place on the internet where this was done, but not rigorously and only with literary examples in mind.

I was thinking of adding in some extra help-factors, like easy conversion tables between $BTU/day$, $J/yr$, $W$ and other measures of energy magnitude and output, the energy required to power a spaceship to fractions of the speed of light and projections at various linearized growth rates of humanity's energy usage growth, and the time to reach various thresholds under those conditions, and perhaps estimates of the power output of humanity or specific civilizations at some point in the past.

While admirable, the scale of this question is likely beyond my current time commitment capacity. Would there be interest in participating in a wiki page for such an endeavor?

Before unleashing this on the Main, I would love feedback on the general feasibility of such a wiki, things that I'm missing out on, and other general thoughts and advice.

EDIT: Under severe time constraints at the moment, will try to build this up in here in preparation of posting on main in a few days' time

• While it might work for advanced civs, is it for the type 0 civs as well? Can we have a Type 0.4 civ? I think the problem is that they cannot be defined precisely by using their energy consumption? – Vincent Feb 8 '15 at 16:01
• @Vincent That's what the big formula up there is for. – Serban Tanasa Feb 8 '15 at 16:12
• Several studies have shown that we can link energy consumption with the GDP. We have more data on GDP than on energy consumption. – Vincent Feb 8 '15 at 16:44
• If I had to understand that formula before asking a question, I'd probably never ask another question. The goal is admirable but we're going to need some easy-to-use aids if we want people to use it. – Monica Cellio Feb 8 '15 at 18:34
• @MonicaCellio, indeed! I was thinking of putting some helpful tables with values for, say the Roman Empire, Medieval Europe, Modern Humanity, some fictional examples... – Serban Tanasa Feb 8 '15 at 18:36
• @SerbanTanasa that would definitely help! – Monica Cellio Feb 8 '15 at 18:39
• A large part of the problem is in finding reliable data. I've found this skyscrapercity.com/showthread.php?t=1578952 I tried to find how developed the world was in 1700: I got like 0,341 and I have no idea if it, ok. – Vincent Feb 11 '15 at 6:04