Einstein said "Reality is an illusion, albeit a very persistent one"

Sometimes what you see in Tai Chi   a video link with an explanation

I read somewhere that Einstein said, "Reality is an illusion, albeit very persistent." In retrospect, and with tongue in cheek, Einstein was particularly correct regarding how students hold to what they perceive even with a cursory examination.

"...I watched the video of Master Hwa at home; you are wrong, Mr. Roach.." I explained that bobbing up and down, straightening the leg, and standing up is not the same as lifting the leg with the core. Upon correction for "bobbing up and down," the student told me, "...I watched the video, and when Master Hwa lifts the pelvis with the core, he straightens his leg and stands up..." I asked the student how many times they watched the video, and the answer was "...once...". That is what I mean by "cursory."

Master Stephen Hwa "It would help if you remembered that sometimes the appearance of reality is an illusion. My students in class often told me that they thought I was moving a certain way and tried to do the same. Later they found out that their observation was not correct. That was why I incorporated different views in my video so you could see my moves at different angles to lessen the chance of a wrong impression. Using a fresh eye to review the lesson video could uncover any misinterpretation of my movements. The other thing to remember is that you perceive that you are moving a certain way, but you are not moving that way. I met one student who had finished the lessons from the video. One problem I observed was that his movements initiated from the chest area when he tried to internalize his move away from the arm and shoulder. He would

scrunch his chest to start an upper body movement. When one of the students in my class makes the turning movement, she does stabilize the pelvic area, but the turning motion initiates from the upper abdomen area. In both of these cases, the concentration on the internal position is too high. It has to be in the navel and below. When done right, you will feel the tight connection to the lower body through the buttock. My 12-year-old student in class made a brief comment: "one thinks that he is not doing external, so it must be internal." It is not an either-or situation. There is an intermediate region, which is neither external nor very internal"