Ouch. I didn't say you definitely need a certificate or education, I was trying to say that is one typical (but not always), definition in some terms; and also qualified that by saying the word itself is very, very, broad and can actually mean what you want it to.
I wasn't trying to redefine anything, just giving one of the typical definitions (prolly those used by those who do carry licenses and/or certificates). That's all.
I hope I didn't construe any wrong meanings here, if so, my apologies.
It's all good.
