Multiverse experiments could still be made by the statistical measurements in the lab.
Multiverse experiments could still be made by the statistical measurements of the percentages between multiple RPI/RPII in the lab. RPI and RPII described by B.Libet.
see: Free Will Readiness Potential Ratios, the Key for a Multiverse Number Calculation.https://vixra.org/pdf/1803.0100v1.pdf