Here's another example with the same guy.
Couple years ago I was visiting with him in the Winter. In conversation he asked if I had problems keeping my windows clear in the Winter when pushing snow? I said not really. As the day or night progresses I might change the heater setting or divert the air flow a different direction. I try to keep my windows cold most of the time and not cause snow dust to melt and stick to the glass. He said, not on the outside, I'm talking about the inside. Again I said no. He said my cab interior is so wet that I have trouble getting the door open the next day after it sits and gets cold. He said everything inside the cab is covered in frost. I have to get the machine cranked and let it run for 30 minutes to get everything thawed so I can run......
I said your AC isn't working. He said no that's not the problem, I'm talking about the heater. I said yeah, your AC isn't working. He gave me that look and said what does the AC have to do with the heater? I said I never turn off the AC compressor. Never. Adjust the temp in the cab with the heat control. Always run the AC to keep the cab air dry. He gave me that look and changed the subject. JD uses a separate button to activate the AC. Then you control the heat level with a turn knob. Fan speed with a separate knob.
Month or so ago I asked him how the heater situation was in his cab? He said no problems and changed the subject. He wasn't able to admit that he didn't know to always run the AC even though he's ran a grader for 15 years.
I try to always have an open mind. My Mom told me many, many times, you'll learn more listening than you ever will talking.