I think it is better to take classes, however the question was asked whether or not classes were necessary, and I don't believe them to be, for individuals with the right mind set.
Simply put, if you break down every element of a punch, and use that thing inside your head to ask, well how can I improve, yes you might increase the risk of breaking your wrist if you aren't careful, and you might take a lot longer than if you had a good instructor, but you will also learn the basics like an egg becoming a chicken! Lol. jp. That was a bit intense.
I think a good thing would be to both think for ourselves, and have a good mentor, if you have the resources.
Ogedei, with a cat pirate picture like that, you are calling me ridiculous? How very nice of you, I will have to think about that while enjoying my 65 degree weather down south. (Stretches back and relaxes)
