This is not what his experiments showed or at least a distorted interpretation. More accurate would be there is brain activity before we are able to communicate an intention. If that is a "discovery", I hate to see the rest of the work.
https://wmpeople.wm.edu/asset/index/cvance/libet
« Your brain know milliseconds in advance what your conscious I will do next»- Benjamin Libet neurologist after his well known experiment...
https://wmpeople.wm.edu/asset/index/cvance/libet