So I'm gonna toss out some theories about some things about Anti and Dark. So later in the video Anti stops glitching right? Mark explained that he just got lazy and stoped it, but lets aply some shit to this. So Anti is a virus or demon in Jacks body right? Not a separate entity. So the glitching is JACK FIGHTING BACK. The less he glitches, the more he is in control. Dark also glitches a bit, but he is a separate entity from Mark. In Marks words "he's from a separate reality and bleeds into this one" so thats that right? Thats why he glitches. But sometimes he does it alot or barily at all. So here is what I think. The less he glitches, the more placed in our reality he is.