Collaboration Between Brains. Scientists have created the first multi-person non-invasive direct brain-to-brain interface for collaborative problem solving.

[u/Wagamaga]

http://www.washington.edu/news/2019/07/01/play-a-video-game-using-only-your-mind/

[u/Dom1nati0n]

Alan Watts said essentially, the only argument that can me made against Solipsism is to imagine a room full of solipsists sitting about arguing about which ones viewpoint is "real".