Think it's endemic in the education system too. Struggle for funding must be a real drag. Having to come up with a new idea or theory every couple of years just to keep ya job, and then have to prove or disprove it. Still, it's all part of lifes rich tapestry I guess, and after all, some of the research will turn out to be useful, if only to give a springboard to someone elses ideas. If it makes us question the evidence, it hopefully will help us to think outside the box a little.