Starting to finally figure this one out.
“I’m sorry to say that Marcin was rather good at puzzles,” Lillian told him. Tobias had decided that reading her into the situation was safe enough; he trusted her, Asenath trusted her, and there wasn’t anything else for a lunar geologist to do right now. Besides, she knew Marcin from Dee Station.
“He enjoyed working out old collisions from the asteroid tracking data,” Lillian went on. “He always said it helped him quiet the part of the brain that kept him from painting. He was good at those, too. Not a master, mind you, but he could have made a go at it if being a lunar researcher hadn’t worked out.”
“Was he one of the, ah, interesting ones at Dee Station?” Tobias asked her as he studied what images existed of Grabinski’s work. He had been a neo-graffitist, so most of his work obviously was back at the abandoned British facility.
“Interesting-interesting, or interesting-barking mad?” Lillian shrugged. “The former, I’d say. He had his little ways, like the rest of us, but he would sit with people at meals and come to parties. I think he had a fellow, back on” — she waved up, all the while keeping her eyes resolutely anywhere but in the direction of Earth — “You Know Where. I know he took it hard when everything happened. Even when we still talked about it, he chose not to talk about it. I suppose he never saw the point.”