Although in zen they talk about transmitting The Mind to an individual mind, I don't think that this analogy can be applied to skill -- with the exception of the very rare and occassional prodigy.
For example, does anyone believe that they could learn to play classical music on a piano simply by watching a master play? If that was true, we could all play classical music on a piano. The term "master" would cease to have any meaning.
It's the same with aikido. You can watch a master perform a technique, but then when you try to do it, you find it to be very difficult. The only way, with the piano, aikido, or any other skill is through practice.
Common folks -- let's get real!