For those of you who cling to 2D maps despite the availability of cheap laptops able to run 3D star mapping software (like ChView), the following, it seems to me, might - just might - offer the bones of a pseudoscientific handwave justification rooted in real-world (if highly speculative) cosmology:
http://en.wikipedia.org/wiki/Holographic_principle
" the theory suggests that the entire universe can be seen as a two-dimensional information structure "painted" on the cosmological horizon, such that the three dimensions we observe are only an effective description at macroscopic scales and at low energies..."
- whereas at the extremely high energies involved in the jump effect, the "real" 2D nature of physical coordinates is reasserted and indeed essential for plotting jump.
[lowers hand, it's quite tired now]
http://en.wikipedia.org/wiki/Holographic_principle
" the theory suggests that the entire universe can be seen as a two-dimensional information structure "painted" on the cosmological horizon, such that the three dimensions we observe are only an effective description at macroscopic scales and at low energies..."
- whereas at the extremely high energies involved in the jump effect, the "real" 2D nature of physical coordinates is reasserted and indeed essential for plotting jump.
[lowers hand, it's quite tired now]