There is ---definitely ---- right and wrong , 

intelligent, unintelligent, wisdom , foolishness  about approaches

all approaches will not lead to same place 

nor at the same speed, 

nor with the same ease, 

nor with the same effectiveness

one can be circling around the engg college life long 

but cannot and will not learn engg and will never become engineer 

what is required is to take admit into college 

and do the course, 

do the homework prescribed by the wisest engineers 

to make one sufficiently knowledgeable in the field in limited time of 5 years, 

so that he can practice his profession thereafter , life long , meaningfully, fruitfully usefully

2 one can thru self effort , without guidance, 

may spend lifelong reading all kinds of books, 

listening all kinds of people, 

or just remaining at home without any thing 

he never can become a graduate , nor can be any use to himself nor to others 

as far as engg profession is concerned