IMHO with how auto are made today, paints had to change to keep up with them. meaning back in the day auto's were made from thick steal. If you got even the smallest of a ding the paint would chip. Today's auto is made from flexible material. You can get a ding and pop it out and the paint will not chip or crack. Why? Because today's paint is not made from the solids of yesterday's paint. It flexes more without cracking. I believe you can do things today with this paint that you could not do before. It also took the paint manufacturers some time to catch up or make their paints flexible to meet the demands of today's auto. IMHO. Here are some pics of what I am doing. Again the yellow you see is 5 years old. Or was applied fiver years ago over the paint that was already on this airplane. I sanded and painted said area. I have no idea why, But I can not attach any files or pics. I also can not make paragraphs. This site is putting everything in one long text message. Annoying is what this is.