I totally understood how the physical nature of the purple stuff fits into the concept, but I was just worried about how that idea translates into gameplay, especially for a platformer. I'm imagining a scenario where I have to do a lot of jumps to get somewhere then take a random chance on whether some memory loss area is solid or not then ending up falling all the way back down if I guess wrong. It would feel a bit unfair and tedious to get all the way back to that spot when you already just cleared it. But that's just my thoughts.