Consider
that the passage of time for a graviton (and for an object made of
gravitons) can only be measured by reference to events.
REASONING
Because
the passage of time is measured by reference to events, events that
take place within the Universe enable the passage of time for the
Universe to be measured.
CONCLUSION
That
the Universe is subject to the passage of time but the passage of that
time can only be measured by reference to events.
20 Mar 2015 - major revisions to layout, content, and numbering. 08 Aug 2016 - revisions to content and layout. 19 Apr 2017 - teels changed to gravitons.