but also for more common things, like let's say I want to allow everyone with a birthdate after 1970 to have access. It seems like spicedb is not the right place for such a check because I would have to both code the logic in a different spicedb DSL and it also doesn't have the data (the birthdate of the user) which I then have to send over as well. Meanwhile if spicedb were embedded with an appropiate API, I should or could be able to use the same logic and data for the check