Isn't this whole debate really nothing more than the basic, human learning principle of of "Trial and Error"?
As with any new, learned task...... there is a learning curve where we fail more often than we succeed until we reach the point where we become competent and succeed more than we fail.
The fact that we must fail far more often than we succeed initially, is just one way the brain eliminates poor methods and isolates potentially successful methods.
The degree of failure is relative to the individual and there may be some out there who need to fail 5000 times. I think the average person cannot be pigeon-holed into a specific number any more than we can accurately say that everyone who hits a million balls will find themselves playing at the higher levels.
