By mapping the way patents cite each other, network scientists have been able to study how different technologies rely on each other and how new technologies emerge
Navigating the web in the early 90s was never an easy business. The complaint echoed from one user to the next was that it was next to impossible to find anything.
That began to change in the mid-90s thanks to the evolution of search companies such as Yahoo. But even the early incarnations of search were difficult to use. Yahoo is a good example. Its earliest search tool was a directory that categorised webpages according to a predetermined hierarchy.
To read the full, original article click on this link: Global Patent Map Reveals the Structure of Technological Progress | MIT Technology Review
