Where did the things I need to know to do my job come from? Mom, Dad, & family 10% kindergarden 5% elementary school 1%

Where did the things I need to know to do my job come from? Mom, Dad, & family 10% kindergarden 5% elementary school 1% middle school 1% high school 1% college (B.S. math) 1% college fraternity 5% business school (MBA) 1% my first mentor 5% my second mentor 10% my users over the years 10% my employers & customers 10% reading 5% other programmers 5% doing on my own 30% ----- 100%