[Dipper hadn't expected the Dirk part to be an Andersen lie, and that takes him back for a second as he tries to figure out why Andersen would be doing that, like this, but he was asking himself the same thing yesterday when he heard about it for the first time. But Andersen's private agenda aside--]

Forget about Andersen, for a second! All of that, that's not. That's not what I was saying. [well, it was, a bit, but--] If the only way out is that choice, are you seriously saying you think people wouldn't go for it if you told them? Or is it just that you're afraid they won't believe it because your only proof is Craftly's word? [dipper stands up, since Jay is standing too, and it must look really stupid to see a 12 year old who isn't even five foot tall try to square up] If you're so sure that what you're doing is right, that it's the only way, that you're not being tricked at all-- then you should be just as sure that everyone else would agree if given the information you guys have. [he takes in a breath] ...It's not like people choosing to die would make a difference to your plan. We know suicides count the same.

And--and Mabel's right. You running a murder game forever isn't any better.