I read about this several times and I think this whole button experiment is somehow screwed. The measure some brainwaves and draw such a fundamental conclusion

I read about this several times and I think this whole button experiment is somehow screwed. The measure some brainwaves and draw such a fundamental conclusion without really understanding what they measure. Maybe we are just making our decisions in our mind before they get transformed into language or actions. But that wouldn't imply that these are not our own decisions.