[mxplxxx (OP)]

Of course, time and memories are inextricably linked. Without memories there can be no time, just an eternal present. Memories in the brain allow us to process the past and predict the future.

Because of this, it is very likely that all of the objects/systems in the universe are memories, especially given that state changes in the universe are instantaneous. This is especially true of bosons which appear to be recordings of state change events from the past. Bosons (except for Higgs) can be considered to be temporary memories and fermions to be (semi-)permanent memories. Temporary memories are likely not "visible", leading to the possibility that they constitute dark matter. Tachyons can be considered to be future/imaginary memories.

Thus it could be considered that all systems in the universe are, in effect, brains with memories. Networks of galactic clusters are brain-like in appearance. In this way, it could be considered that time is just a a concept in a brain. It is very likely that past memories also exist (somehow) in the universe as spacetime systems, as predicted by Einstein.

Maybe the Higgs Boson/system is a record of all the state changes a system has undergone. This could be achieved if multiple state changes are associated with a Higgs boson/system as subsystems. These events could record energy gain or loss and the total energy of a system is the total of all events/subsystems  associated with the Higgs system. Throw in a timestamp on these events and we have the basis for time travel.
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See https://www.thenakedscientists.com/forum/index.php?topic=75960.msg575784#msg575784 for more information on universal systems.