Once had a "teacher" who could not admit that her way wasn't the only way. If I can't do it how someone has shown me I usually think there has to be a better way for me. Doesn't make anyone right or wrong just different. We didn't consider her a good teacher because she didn't want to share information, but if anyone came to class with a hint she would be very sarcastic. We always had to go find her if we need help because she spent more time out in the shop than in the class room.
Some of us started our own group.
The shop owner kept saying they had a long list of people waiting to get into the classes. Well if this was so why did she go out of business less than 12 months later. She even tried to convince me that rayon was a natural fiber.