Board Thread:Questions and Answers/@comment-33646122-20171225033136/@comment-33349719-20171225061121

Yes. I think its pretty obvious.You'll notice if you reset before you beat the game, Sans will say stuff like he knows about timelines. Here are a few examples. "Huh? Have you seen it before or something? Nevermind, you're a human, right?"-- when you first meet Sans. "Wow, you're great at puzzles. It's like you've seen it before."-when you solve the X and O puzzle in Snowdin. Gaster also knows about timelines because he can see every timeline, and will still remember if you reset. Idk if Sans is r5elated to this tho.