Yes, downsides, but as the parent of formerly national and international level saber fencers, those times might mean the difference between an Olympian and a non-Olympian. And such small numbers probably separate great baseball batters. I am not advocating for the use of videogaming for health (!), but find this work interesting. I have heard former gamers make better robotic surgeons, too. Thanks for your observation: For most of us, probably irrelevant changes in brain function.

Michael