In the Saiyasart the past is a fact that has already happened and is immutable. What has happened has happened and remains so.
The past can be experienced psychologically over and over again in the present, which carries the disadvantage of a sticking to the past, especially since the repetition of the experience or event is incomplete, since the corresponding emotions that prevailed when these events or experiences were present can no longer be repeated or experienced in this context.
The past remains as it was, with these emotions, but is no longer comprehensible.
The past borders directly on the future.