Only a succession of moments can give the conscious body proof of its own reality.
When confronted by "memory" as evidence of the unreality of sequential time, the body attempts to reject the evidence. And so the same source that says to us "Use your head! There is no way that past, present and future can exist simultaneously!" has to say from time to time, "Just ignore that 'deja vu' experience. I can't explain it, so it can't be real ... of course, we must have just imagined it!"
This observation leads to the conclusion that the logic of the body is not sufficient to deal with real reality.
The question is, "how can we deal with it?"