Is There a Risk of Not Acting?

Some people worry that doing work in this area could be harmful if not done well. How seriously do you take those kinds of concerns? Should people be cautious about jumping into the area if they don't feel like they're really on top of things? I think there are also risks of not acting, which is not being able to help out when there's an important problem and you have something to contribute. So I don't think it's an all or nothing sort of thing where you either have to stay ignorant or be a super expert. There's a middle ground where you develop your confidence little by little as you go and try and remain as modest as possible in areas that you have little expertise