Too often I see Tai Chi being taught in a manner that is devoid of its original roots as a combative art.
If you learn a form without understanding how the movements are used then your movements, the placements, the timing and so on will be out of whack. This in turn begins a vicious circle of learning useless movements. But why should it be like this?
I can’t answer for others but learning a technique should be accompanied by some explanation of its usage. In that way the learner can understand the importance of keeping correct distance, having the right positions, using leverage, maintaining a stance to have stability and so on.
Below is an example of learning the form on the first lesson :-