On the Benefits of Promoting Diversity of Ideas
  A common flaw of astronomers is to believe that they know the truth even when data is scarce. I provide ten examples where this approach led to wrong strategic decisions in research plans, causing unnecessary delays in finding the truth. In order to make the discovery process more efficient, I advocate affirmative action for diversity of ideas by telescope-time allocation committees and funding agencies. 
Abraham Loeb (Harvard)
astro-ph.IM physics.hist-ph