Despite Your Best Intentions,it's Hard to Bring the Best Evidence

Despite your best intentions,it's hard to bring the best evidence to bear on your decisions because of such reasons as ____.

A) it is too expensive;it's not ethical and there's not enough good evidence
B) it will hurt diversity and synergy within your organization
C) there's no competition or there's too much competition
D) there's too much evidence;there's not enough good evidence and the side effects outweigh the cure
E) people are trying to mislead you and it will not allow MBO