If you want some possibly-far-fetched but very high-ROI space investment strategies, have you seen the Phil Metzger et al proposal for rapid bootstrapping of sp

If you want some possibly-far-fetched but very high-ROI space investment strategies, have you seen the Phil Metzger et al proposal for rapid bootstrapping of space industry[1][2]? Even if off by orders of magnitude it would still dwarf the industrial output of the world within a few decades. [1] http://www.philipmetzger.com/blog/affordable-rapid-bootstrapping-space-industry-solar-system-civilization/ http://www.philipmetzger.com/blog/affordable-rapid-bootstrap... [2] http://www.philipmetzger.com/blog/wp-content/uploads/2014/09/Preprint_Affordable-bootstrapping-of-space-industry-and-solar-system-civilization.pdf http://www.philipmetzger.com/blog/wp-content/uploads/2014/09...