Well, okay - Dan supposed he could see the danger in opening a door to one dimension, one out of like billions and billions. The multiverse wasn't exactly a new concept - he'd read about it, of course, maybe dabbed in some sci-fi books that weren't too heavy on the quantum physics, but he was far from an expert. A lot of this would probably be experimentation.
"Yeah, alright," he agreed and, just like that, another thought lit up in neon scrawl for him. That was how it worked sometimes - he just got impressions, and alphabet soup, and emotion, and... "It was a premonition," he told Richie, because maybe the guy wanted to push it away, but Dan yanked it right back to the forefront. "You...yeah, you should probably let me look sooner rather than later."
The sooner this mess got sorted out, the better off Richie would be anyway.