A simple way to spark thought about four dimension space

Design an electromagnetic experiment as below:
Fix a plastic ball over the ground.
Brush the ball with a piece of cloth or leather which one is appropriate. (charge by friction)
Put the cloth or leather on a table far away.
Put a compass beside the ball. (for detecting if magnetism generates)
Guy A walk to the ball and watch the compass while guy B walk to the ball on the opposite side and watch the compass.
Analysis:
According to the relative movement principle, the charged ball will move to the two guys respectively and the two guys will see opposite directional magnetism. So the needle of the compass will turn in opposte direction. contradiction happens.
Otherwise, no magnetism generates..
That's to say three dimensional space is not able to represent nature sufficiently. There might be something special between charges.
X4 Theory (four dimension spacial physics) amended the traditional current concept and suggest that current exists only when charge moves relative to charge.
X4 Thoery also calculates that speed of light might be exceeded in invisible matter worlds.
X4 Theory is now deposited in Mendeley, the group: Four dimension spacial physics and cosmos.
Thank you.