Let's talk about this mythical creature. The average Bihari probably knows a lot. Does that help them in any which way? Aside from getting some government jobs, probably not. This is probably the classic case of quantity over quality - sure, the average Bihari might know a lot, but that comes to nothing. A blatantly militant and casteist Lalu Yadav, together with the extremely opportunistic Nitish Kumar, seem set to capture power in Patna, thus returning the state to its former form. An alternative that speaks the message of jobs, infrastructure and development looks to be losing. And all this, presumably, because one side couldn't get its caste equations right! Sure, caste is still important in India, but it seems Bihar and UP remain the last places where it dominates over all else - even life and death by the looks of things.
Therefore, it seems that the politically savvy Bihari is a myth - they are simply the maggu student who is able to memorize vast amounts of information without ever making any sense out of it. Until they help themselves up, they will be destined to hold government jobs (whose entrance exam is the mother of all tests of rote memorization) or work as helpers in those parts of the country that have moved far ahead, with far less so-called knowledge.