Only the uneducated. Don't you think Jake's kinda educated when it comes to fixin' things?
Any one who has been trained properly, weather self taught or properly schooled, will follow the proper flowchart style techniques.
You are not very smart, however with education you may become an average service tech.
Right now, you are uneducated. That's fine.
It's fine until your responses imply you have reached a measure of knowledge to be their qualifier.
You are not in a position to be anyone's qualifier with regards to HVAC.
-zero