Flickering Mind: Attention Shortage

When I was young, one of my favorite pass-time was dictionary reading, specially reading the "Dictionary of Idioms". It usually started from an innocent reference for a specific word. The "also see" function thus usually directs the reader to another word or idiom that are equally interesting. Thus, I often ended up hopping from word to word following the pointers and eventually forgot about what I was doing. The "serendipity" type of knowledge discovery constitute a rare diverge in the mind of a studious high schooler.

In the internet age, the similar type distraction becomes so big that it becomes a threat to productivity and sobriety. My firefox window is usually crowded with 20-30 tabs, each of them half read and waiting to be re-visited. Preview window usually has at least 20 pdf papers opened up. None of which is lucky enough to master my full attention.
Here's a peek of the thumbnails of my running program

Help!