I looked it up now. "In the libet Experiment, Libet asked subjects when they felt the intention to move, he asked them to watch the second hand of a clock and

I looked it up now. "In the libet Experiment, Libet asked subjects when they felt the intention to move, he asked them to watch the second hand of a clock and report its position when they felt that they had felt the conscious will to move. Libet found that the unconscious brain activity leading up to the conscious decision by the subject to flick their wrist began approximately half a second before the subject consciously felt that they had decided to move." <--- the bug could be chronostasis. They subjects perception of time is warped when looking at the clock.