[RPM] Learning the system

[Shostak]

Originally Posted by Christopher R. Rice

On the other side of a dimension. Not in your current one.

My interpretation is that "across dimensions" includes (but is not limited to) the four dimensions of Space-time. It doesn't make sense to me that Greater Sense Crossroads could be used to communicate with someone in a pocket universe in the absence of an existing gate, but not with someone in the house next door when Lesser Sense could, so long as there was an existing gate or weak spot.