Thank you for playing! The condition is inspired by similar real conditions like dementia, but I didn't want to misrepresent the real issues that people suffer from this. The smudge you are referring to was added on purpose. I made sure that the puzzle was solvable regardless, but I added it because I thought that it is a way to make the player be in such state of confusion. (Maybe you put something there and you forgot or you don't remember what it is in there in the first place). But thank you for the feedback. I might reduce or remove the effect all together in the future if people find it annoying.