Those who arn't smart enough or are completly new to the OT world won't know where to even begin... It's like math, unless you just need to take: 1+1=2 then yeah you don't need a tutorial but when you got a problem like so:
It's actually somewhat literally like that...
Well, whatever. Maybe it's just my understanding of "world". Maybe it depends on people.
Smart person will find a way to understand how something works, not smart will use someone else to do the job, because he's not capable to understand.
So, at the moment, ot community is full of not smart people.