Skeletal vs Plinth style turntables

Halcro, Timeltel et al

I have a hypothesis that surely explains that my friend Richardkrebs may well be correct. The hypothesis is that Halcro has inadvertently fabricated the worlds first Smartpod, that self corrects any stylus drag by moving in and out relative to the record to null any speed variation due to stylus drag.

Further to the above

02-10-15: Richardkrebs
I do not understand how the time line test proves that the pod is not moving? All it is measuring is the platter's speed.

A basic understanding of the physics involved would help.
Halcro's TT is a direct drive Victor 101. This turntable employs active speed correction using servos. The error correction detection can only measure the difference in relative speed between the base and the platter - those who have studied engineering, physics and mathematics at university would recognise that this a closed system.

The POD exists outside the closed system, and as such if the POD is moving, the servo correction cannot be correcting for this outside force as it is not in the measurement loop.

Therefore if the POD is moving, theoretically, it would reveal itself in the timeline test.