Peter Juhl's fingers moved almost imperceptibly, shifting the softball-sized rock in his hands a hairbreadth at a time into a barely discernible dimple in the golfball-sized rock below, itself improbably balanced on yet another rock.
As he eased away his hands, the rocks remained as stable as if glued together. "It's kind of like the opposite of a magic trick," Juhl said.
"A magician shows you a deception, and if he's good, you think it's real. I'm showing you something real, and if it's good, people think it's a deception."
He grinned: "After 20 years, I never get tired of the feeling of looking at something that shouldn't be there."
A cat's paw of wind from Lake Harriet suddenly teetered the rocks and they tottered down — which made Juhl even happier. "To me, the most important thing is that they don't last," he said of his sculptures.
"I want to create something that's on the very edge of falling down. It's ephemeral. People stop and ask if I can build something for them that would be permanent, and that's missing the point."
Juhl, of Eagan, balances rocks to create works of beauty. There's no particular name for the art form. Some call it "rocking stones," for the subtle nature of the adjustments. "Equilibria" has its champions. Mostly, though, it's called balancing rocks.
Juhl, 57, began more than 20 years ago, an idle pursuit on a rocky North Shore beach.