Once people become professionals, I think they suddenly forget what it was like before they had all their training.
If others don’t have the same training, they try to dumb themselves down and it comes out sounding condescending.
I can’t stand it when people do this. My brother had gone to school for HVAC design and contracting. He was an excellent HVAC technician and he would come to the house and work on my HVAC system whenever I had a problem. Since I studied with him, he could tell me what was going on and what needed to be repaired, and I understood everything he was saying. Once he took college classes for engineering, he treated me like I wasn’t as smart as he was. I raised him, and I couldn’t understand why he was treating me like a child. The last time he was at my house, he was telling me that I needed a new HVAC system. I was already aware that this was a possibility, and all I wanted was for him to tell me about the different HVAC equipment that was now available. He began talking down to me like I was a child and incapable of understanding. I got so angry that I yelled at him. Even when we were younger, I never yelled at him. I was patient and always tried to understand how he felt. I knew what HVAC was and how it worked, and all I wanted was to know about new equipment. If he hadn’t talked to me like an equal, I was going to throw him out of my house. He understood what I was saying.