A knock on the door: two men from afar, bearing marvels. The visitors, both fit, neither tall, were Jon Griffth, a climber, photographer, and filmmaker who lives in Chamonix, in the French Alps, and his foster son, Danylo Terekhovskyi, a refugee from the Donbas, in Ukraine. They kicked off their shoes, declined an offer of refreshments, and instead asked that the man who had answered the door find a swivel chair and position it with the clearance to spin fully around. (Griffth, forty-two, did the talking.) The apartment dweller complied and sat. Griffth produced a Meta Quest 3 virtual-reality headset and a pair of earphones, and, after a moment, the dweller was no longer in his dwelling but soaring over the Swiss Alps, near the Monte Rosa massif, in the…
