Why Carbon Work Is Best?

If you go about it the right way, you can get most of the carbon sources for free. Don't even need wood. With potash and flue gas, this is akin to free money. Can be done from anywhere. This can probably be the most risk free and most profitable business in the world.  

Hence spent so much time in understanding intricacies. 

If carbon is free, solar heat is almost free, activating agent is free, washing agent is free, then the only cost that remains is labor. Hence, very high margins.