Comment by Mikeb85

Of course economic growth can last. GDP is just a number, in nominal currency, that measures not just sheer output, but also efficiency, technological progress, etc... In an idyllic future, when we're no longer extracting oil from the ground, no longer working manual labour jobs, etc..., economic output may reflect technology and ideas being created, the dollar will be worth much less (thus more nominal output), and as long as people are engaged in some form of economic activity (buying something, working in any form), we'll have measurable growth.