It’s harmless. Intriguing. And sometimes even illuminating.

Simply single out a youngster in the National Hockey League — then try to predict his evolution. As in, who will he become?

Sean Monahan, for instance, has already been likened to Jonathan Toews, Brent Sutter, Ron Francis, Brad Richards, Anze Kopitar.

But Barry Trotz, when asked about Seth Jones, declined to play along.

The Nashville Predators coach has no interest in comparing his prize blue-liner to anyone else.

“Seth Jones is going to be Seth Jones,” Trotz, ever pleasant, said Tuesday morning. “When all is said and done, he’s probably going to put on another 30 pounds. So he’s going to be a six-five, 235, really strong-skating defenceman who could be a difference-maker every night.

“That would be my comparable to whoever you can come up with.”

Shea Weber didn’t bite on the name-game either.

“I’m not sure,” the Preds captain said with a shrug. “But he’s something special. Mobility, that’s his biggest asset. And, for a 19-year-old, the poise he has with the puck. You don’t see a lot of guys, especially defencemen, have the patience and control to make those plays in tight areas — and do it with confidence.”

But Jones, like any teenager tiptoeing into the NHL, has had his moments.

According to the kid himself, the first 20 games had been solid. Then? A somewhat troublesome stretch.

“You’re so excited that you forget how long the season is, you forget how consistent you have to play — I think it happens to a lot of guys,” said Jones, who has picked up 17 points — and a minus-13 rating — in his first 47 appearances. “I don’t know what you want to call it . . . but I just didn’t play as well in the next 10 or 15 (games). But I think it’s been pretty good (lately).