The article mentions some very important aspects, like the general lack of understanding of the exponential function and its consequences in a dynamic closed system. The main reason I even began looking at these matters was Albert Bartlett, after a friend of mine suggested that I saw Bartlett's excellent lecture on "Arithmetic, Population and Energy".On the planet's capacity, this is an intersting view. On a side note, I quite like The Conversation, usually useful and unhyped academic exchange, but talking straight.
It's a "long" lecture so here's a teaser, were Bartlett gives an interesting example, using his very dry sense of humor:
If everybody saw this video and understood it, which isn't really that complicated as Bartlett sarcastically notes, I think we would be a lot more aware of our current situation.