Comment by jijijijij

Yes! Although looping dizziness happens in copper, too.

If you ever experience this, but can't uncoil the transmission cables, a workaround is to spin your desk chair in the opposite direction of data flow, at about the speed of light (for the respective cable medium). This temporary cancels out the effects of ethernet frame looping induced dizziness. Alternatively, you can treat any sickness symptomatically by chewing on a piece of ginger. The latter also helps with aforementioned data-abrasion in fiber optic cables through means not fully understood, yet.