I think about another structure
I think about another structure
Wikipedia categorizes articles in such a way where you actually can tell which one is parental and which one is child.
php and js would be bonded beneath a "scripting language" category, which would be beneath a more general "programming languages" category, which would be beneath an even more general "computer languages" category, comprising "markup languages", comprising html
all the way back to philosophy ;)
About visualization. It's impossible :) It will blow your mind if you will see the entire mindmap or at least few percents)) It will looks like this: http://blyon.com/blyon-cdn/opte/maps/static/1069646562.LGL.2...
Better way is to allow users to ask "How can I reach this knowledge?" And the answer will be displayed as quite small mindmap, which is leading user from his current situation, current knowledges to the knowledge he requested.
I agreed about philosophy as a last destination) May be it's only way) So, do you want to be the creator of the new philosophy?)