The Eighteen Levels of Hell: Lying is Forbidden Here

'This is the Penrose Stairs!'

'Simply put, the Penrose Stairs is a quadrilateral made of four stairways. A person standing on it and walking forward, walking clockwise, will infinitely climb upwards, and walking counterclockwise will infinitely go downwards. They will never finish walking, and will keep looping on the quadrilateral, endlessly.'

(For specifics, you can refer to the picture at the end of the previous chapter.)

'But, the Penrose Stairs only exists in theory, and cannot be realized.'

'I have to say, the creator of this Ghost Whisperer Secret Room is very imaginative.'

'Assuming the four points of the Penrose Stairs quadrilateral are A, B, C, and D, which are the four platforms we encounter after walking a circle.'

'The four stairways are: Stairway AB, Stairway BC, Stairway CD, Stairway DA.'

'Logically speaking, if we want this quadrilateral to be valid, meaning connected end-to-end, there must be a stairway going downwards.'

'Stairway AB is climbing upwards. When we climb to Platform B, if...'