‼️‼️‼️‼️BULLSHIT ALERT‼️‼️‼️‼️
Coming from a trained actor who has worked on movie sets:
there are more than thousands of people and crew on set at all times
the director, assistant director, sound crew, lighting crew, cinematographer, and camera man are usually less than 50 feet away from you, you talk to them constantly if you are not an asshole to work with, which, reportedly (people in hollywood talk) Gosling is not
they work 12 hour days, with breaks, there's usually a 1 hour lunch break where cast, crew, and everyone else talk with each other. Family and friends can come talk to you here, depending on how intense the set is security and secrecy wise. but you can call people
the filming of project hail mary took about 5 months, but Ryan Gosling wasn't sitting there all alone in a dark room talking to a standing camera
what James Ortiz was referring to in the interview about "helping him feel less alone" was that he was giving Ryan Gosling a scene partner, and saying the lines and giving him a face to react to. This is something that happens in a lot of one-on-one scenes, sometimes they'll make you go stand next to the camera so that way an actor has an actual face to react to.
That was not keeping him sane, Ortiz was helping him act. Gosling did spend 100 days-ish alone on set IN THE SCENES, and hats-off to him because he did such a good job, but he was not developing isolation sickness. I think it would actually, in every sense of the term, be physically impossible to develop isolation sickness on a movie set, my brain is going ??????????
anyways, final point 2 points: NO ONE HAS SAID THIS EVER IN ANY INTERVIEW I CAN FIND
and 2: RYAN GOSLING SAID HE LIKED WORKING ALONE