Gumby thinks the discrepancy is due to an inadequate knowledge of space itself - i.e. variability of the “Classic Vacuum”.
If Space is to Energy as Energy is to Mass, then he suspects the observations attributed to “dark matter” can be explained by presuming a localized density of space - where spatial distortion is equivalent to E. “Dark matter” existing where E is locally sufficient to manifest the weak gravitational force (observable as gravitational lensing) but insufficient to manifest the strong forces required for the creation of matter.
If this is the case, then mass would be variable in proportion to the density of its spatial context.
G=M+E
IOW: Total Relative Gravity = Newtonian Gravity + Spatial Energy Density.
The Idea so affected the professor that he was unable to respond.
Gumby said it was like talking to a statue...
{badumpump}