Talk:Fourth Dimension, Mobius/@comment-3974145-20151224035233/@comment-25600444-20151224183520

It's possibly referencing the observer part with the Time Dilation of Einstein's Special Relativity i.e. that, to an observer going close or at the speed of light, time for them slows to a crawl while the rest of the universe speeds up dramatically. Due to the fact this card's effect is related to time, it kind of makes sense.

Inverse is a word basically meaning opposite. So the "inversed" here could mean the people who move at the same speed compared to the light speed the observer is going at.

That's my guess.