left brain VS right brain, maybe ? different ways to approach problems, or even regard this or that "problem" interesting ?... it's more or less acknowledged th

left brain VS right brain, maybe ? different ways to approach problems, or even regard this or that "problem" interesting ?... it's more or less acknowledged that mastery on any subject comes after 10.000 hours of practice ( or so ) and most people won't dedicate themselves to 20.000 hours to master two completely diverse subjects.