In reincarnation and the wheel of samsara, it is as if you are cloned, a split personality. The game starts over and over. You are running in the samsara wheel like a sports treadmill. You're running nowhere. If you could collect all the I you had in previous lives, you would understand your future, that in the future there is only emptiness of illusions. Collect all the experiences of life to collect yourself. But here amnesia intervenes which acts as a humane pain reliever from the past.