I cant imagine that light is a good proxy for growth, unless there were very good baseline maps that have been properly calibrated for the significant changes in the types of lights used and how they are bieng used......"dictators" lying should be a simple presumption....... which historicaly was confirmed by basic spycraft, in that least sexy of industrial chemicals ,hydrochloric acid, is still a very good indicator of total industrial capacity as it is used for all primary industrial production, and is the most used chemical world wide, but is now bulk shipped, instead of bieng produced localy. Back to light as a proxy and an indicator, the flip side would be to restrict light, and hide industrial locations, as is common in war zones....so....back to spycraft 2025 as to China....they realy REALY are building out there electrical grid , road and rail networks, and no one can doubt that they are not producing massive amounts of everything, andwhile they have an incetive to exagerate there growth, there wester adverseraries have an incentive to lie about the same thing..... the basic truth is that the world is definitly heading towards manufacturing overcapacity for everything, but that this is perversly bieng treated as a bad thing.....