Dig deeper --

 Its natural and sound to challenge your parents and teachers  because  history shows even when when we know something good,  we don't always do good .
Two issues then
A. What we know and
B,  What we ignore and deny  
You may think that universities and academic groups know things but both of the above weak points exist in education. What those who worship academia dont realize is that their focus is often so tight looking down the microscope that they risk missing the  machinery of action.    
You may think that people with heaps of experience know things but with lots of broken families and broken and self serving institutions you would be wise to  be suspicious . People hide their failures- you can rely on that , The more apparent boasting and focus on "the other bloke "   the more you should be suspicious. 

I have both experience and education and can make sound land management risk decisions quickly. Once you dig deep enough you can find a FOUNDATION for decision making that doesn't leave those who rely on you farmers and developers. 
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I know when to consult my professors and when to tell them the bottom line , I told them as a soil scientist to forget the  dreaming of politicians but increasingly they take the money and run , eventually eroding any respect between the three of us . You are on your own but once you realize that you can learn to be better at answering questions and be very good at what you do.
I will publish a response that shows how far politics can take us from professional competence in the NEXT POST .