Answer:
(This is probably going to be short and a little vague. If you need a more detailed summary just let me know.)
Two families have been fueding for a while, the Montagues and the Capulets. One day the masked Montagues goes to crash a Capulet party (risking more conflict). A young man, Romeo Montague, falls in love with Juliet Capulet instantly. Juliet is to marry a man her father selected for her. However, in the end, they cannot be together because of their families conflicts so they kill themselves because they cannot bare being seperated.
It's difficult because the sensory feedback corrupts the signal. The example he uses is when using a radio.
Transcript:
" The trouble is these signals are not the beautiful signals you want them to be. So one thing that makes controlling movement difficult is, for example, sensory feedback is extremely noisy. Now by noise, I do not mean sound. We use it in the engineering and neuroscience sense meaning a random noise corrupting a signal. So the old days before digital radio when you were tuning in your radio and you heard "crrcckkk" on the station you wanted to hear, that was the noise. But more generally, this noise is something that corrupts the signal. "
