All memory is pretty similar in the experiencing of them, what I can say is that when you experience "memory" which is radically different from anything you have experienced before, as in having the perception of an entirely different worldview within that memory, it can be convincing that something is going on, on a personal level. Also, what is "physical memory"..if you mean do the memories have a somatic component, i'll bet the answer is often yes for many people.abandon all belief wrote:How? How did you obtain this knowledge, by what means? Is it in your physical memory? Or do you see it in ways I can't yet understand? In what way do you remember a perception or a quality of consciousness from your "horse" days? (Were you ever a horse?)
Can anyone provide you with some kind of verifiable evidence? Probably not to your satisfaction...this is an experiential truth, and if you've not had an experience of that sort...well I think Kirt put it best that it's insoluble, so you can believe, disbelieve, or practice for yourself and draw your own conclusions.
If you are looking for "arguments for rebirth" though, that is actually a bigger conversation, there are arguments by inference for rebirth, as well as understanding enough Buddhist psychology to understand why there are some good reasons to believe that rebirth, or at least a process like rebirth takes place.
As to what way one remembers their "horse days"...i'll take a stab and say it's similar to how you perceive a kind of reflexive self image that you grasp onto every time you experience an emotion, thought, or similar in meditation that "grabs" you..you perceive and identify with an ego-entity..in the case of remembering these sorts of experience, i'd wager that you perceive yourself as en ego-entity entirely different than the one you are habituated to in this life..though often one with (some of) the same habitual tendencies.
If you want an example of what it's like to remember being something, go look in a mirror at yourself, then think a thought about yourself, good or bad..notice the immediate flash of identification with an ego entity that follows, it is that sort of experience. Better yet, just think of a powerful memory, and notice the ego-entity that you naturally assemble from the memory...it's a constant process.
You need to read more Buddhist explanations for continuity of mind and karma...the notion of karma within Buddhism actually couldn't work along side the notion of a creator God, they are mutually exclusive...I don't understand how without a conscious agent with actual intention (a god) could "karma", hence "appropriate rebirth" could happen.