A lot of research is useless because it's not really research - in the sense of trying to determine the best course of action, or the likely impact of an action or investigate an unknown.
The 'research' that you commission, the question that you ask, all of it is implicit bias. Unless the research can give you an unexpected answer, it's not really research. It's justification. It's cover for a course of action you have already decided upon.
I could have commissioned research that encouraging diesel engines would lead to a reduction in C02 emissions. And used this as the basis for action. But unless I also asked, what are the other impacts of diesel engines... the research is worse than useless. It's dangerous.
I'm sure there's a line in "Yes Minister" about not commissioning a report or inquiry unless you know what its answer will be

http://www.venchar.com/2004/02/how_to_discredi.html