Do you know how to watch?
Most people will say, "I cannot do it myself but I can tell right taiji from wrong taiji."
You are wrong! One cannot tell right from wrong instinctively. Only those who already know right from wrong can tell who is doing it right and who is doing it wrong.
Common knowledge says that one has to understand before getting it through training. To the contrary, only those who already have the ability can understand.
Source: https://practicalmethod.com/?p=23278