@optissima @GBU_28 don't want to necropost, but just stumbled upon that discussion.

I take the distance in the rule more like game mechanics.

If we take the description of the magic in the FR, I would say distance depends on the density of the threads of the weave, the dead magic area, etc. So not very dependable.

On the wish spell, I could agree though, that you could get more accurate info via this.