What Is Normal?

I find myself asking if this is normal or that is normal all of the time.  Almost like if it is normal then it is ok but is it really ok?  Just because everyone else jumps off a bridge, which makes it "normal," then is it ok?  So this morning my mind really started thinking about this.  What is normal?  

When your two year old is being terrible is it normal and to be accepted?  Or maybe when you teenager come home from a late night of fun (like I did MANY times).  Or your dyslexic child can't remember to feed her pet because she has "normal" memory issues.  I wonder what the pet is thinking about "normal" right now.  Is that normal?  

Maybe we think since everyone else is doing something then it is more acceptable.  A two year old throwing a complete hissy fit at a park is less obvious then at a museum.  

I have been researching as much as possible about Dyslexia, once Sunny was diagnosed, and have had many "Is this normal" questions.   At what point do we say enough normal or not, we need to fix this. Can we fix this?  Am I expecting to change a typical two year old into a mature adult.  Well, that isn't a great example since many adults act like two year olds and my daughter is 8 not 2 but I hope you understand what I mean.   

I think it is easier to put a label on something and then say it is normal and move on.  There really isn't a point to this post other then thinking and typing and wondering, is this normal?