I'm still not very happy with the explanation they give, I think it's a huge flaw. For isntance, if the Ring-bearer CANNOT take wounds for any reason, THEN it'd work, you can't "choose" that option, it's not given to you. However, I fail to see why can't you choose an option and circunvent it. The Ring, for instance. You are not PREVENTING the wounds, you're actually TRANSFORMING them, you ARE taking the wounds, you just take them in the form of burdens. This ruligs is really really weird.