‘Where good ideas come from’ by Steven Johnson
Ok, at first glance the title has nothing in common with the main themes on this site and yet it explains exactly how it was created (if we accept that its creation was a good idea 
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Watch this great illustrated video and will understand why sharing information in general might be of great help in finding the missing piece to our ‘”eureka!” moments. “The chance favours the connected minds”, as the author says.
Highly recommend you to see also Steven Johnson’s TED talk. Here he explains in a funny way with a lot of examples from our history the key patterns he has identified that are behind genuine innovations (the GPS invention is quite an interesting story). To make it easier to understand, there is a ‘subtitle’ option and a lot of languages to choose from.
And of course, last but not least, buy the book.