I have always thought that one man of tolerable abilities may work great changes, and accomplish great affairs among mankind, if he first forms a good plan, and, cutting off all amusements or other employments that would divert his attention, makes the execution of that same plan his sole study and business.
-- Benjamin Franklin
Except when when the great change requires a leap of understanding. Regardless of how diligently she works, the person who is blind in a particular area will never make the necessary transcendental leap that creates new understanding.
I have experienced this, working in a room full of brilliant people for a period of months. It took the transcendental leap of understanding by someone outside the group to present the elegantly-simple solution to the apparently intractable problem.
So, while many problems will fall to persistence and diligence, some problems ...
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