This is why Tai Chi is so cruel and unforgiving with it's techniques. From what I know of Internal Martial arts arts the plan and the goal is the same. I'm going to use my strength to attack my opponent at their weakest points. The weak points aren't always weak, but depending on what the attacker is doing that action has structural weak points. Internal Martial arts specializes in stuff like that. I'm not saying external arts can't do the same thing, but they don't do it to the extent that Internal martial arts do it.But I feel that as we get older, the above things start to become harder and harder to maintain and rely on. One of the advantages of an internal approach is that your power increases with age along with your understanding and refinement.
And before I get bashed lol. I'm not saying internal martial arts is better, because internal techniques take a really long time in comparison to external martial arts. A person would have advanced 5 levels of WC before I could advance one level in Tai Chi.