How's this for some linkage...............?

As the technology expert Steve Johnson has argued, the unintended consequences of historical events can be far-reaching.  Gutenberg made printed books affordable, which kicked off an increase in literacy, which created a market for spectacles, which led to work on lenses that in turn resulted in the invention of microscopes and telescopes, which unleashed the discovery that the earth went round the sun.

-Matt Ridley,  The Evolution Of Everything:  How New Ideas Emerge