In another life I worked in sales for a major model railroad mfr and distributor. One year one of the new offerings was a modern caboose. When we went to a west coast show I had a 20 minute conversation with a chap about how the handrails weren’t right for the U.P. Version. the guy even had pictures in his pocket to prove how inept the company had been in making the model. I tried to appeal to common sense and explained that in order to appeal to a wide audience certain standardizations had to be made in order to produce a range of roadnames that allowed the model to be affordable. In one ear and out the other. He continued to want to impress me wit his knowledge about how we screwed up. Knowing I wasn’t going to change his thinking, I finally politely excused myself that my boss needed to speak to me and left him..... only to see him latch onto another coworker and continue on with his diatribe. Knowing what he was in for I mercifully called my coworker over after a few minutes and the “expert” finally wandered off.