6) Growth is unsustainable. Period. Within a closed, finite system like a petri dish, an island or a planet, growth of the physical environment cannot be continued. Thus, mainstream economics with its emphasis on perpetual growth is quite misguided and unsustainable. (The joke goes that an economist is someone who believes that given sufficient water and fertilizer, a tree can grow to be 100 miles tall.)
Here’s a link to Albert Bartlett on Exponential Growth: https://www.youtube.com/watch?v=kZA9Hnp3aV4