You are a Know it All
When your kids are small you know everything. They look up to you. You can fix all the ills in the world. That's because their world is small as they are - consisting of the following main areas:
They are Know it Alls
When they're teens they know everything. They look down on you (mainly because they're taller). The world is their oyster. The world has grown for them - main areas:
Most kids go through a phase where 'You just don't understand'
and everything is your fault.
I suppose its different for everyone, but on average each of my kids didn't really 'speak' to me for approximately a three year period.
All Just Don't Know it All
When you are at that friend stage - you all realise you don't know much at all.
But you don't have to know everything. You only need enough to get you by. As circumstances change you need to unlearn some stuff, relearn old stuff and continue to learn new stuff.
You come to know what stuff you need to learn.
Image "Quality time" by Kevin Dooley under license cc by 2.0