They’ve come up with a way they could do it. I dunno why you’re mad about that, I was just wanting to share an interesting tidbit I’d learned.

My understanding is that the reason why scientists like playing with the idea is that it’s more feasible than it immediately seems, and it’d solve some of the issues that a Mars colony would have (increased solar radiation due to low atmospheric density and weak electromagnetic field as well at very low gravity).

Would it be expensive? Yeah. We’re talking about colonizing another planet though. It already is going to cost hundreds of billions if not trillions to do.