• When your reasons for believing something are justified ad hoc, you are left susceptible to further discoveries undermining the rationale for that belief.

    Neil deGrasse Tyson: When your reasons for believing something are justified ad hoc, you are left susceptible to further discoveries undermining the rationale for that belief.
    Neil deGrasse Tyson (2010). “The Pluto Files: The Rise and Fall of America's Favorite Planet: The Rise and Fall of America’s Favorite Planet”, p.51, W. W. Norton & Company