Ha Ha, try this

looks to me like holographic theory is pretty much a causality model. there are hundreds of those and they have a hard time integrating into TOES. I figure causality at this point is mainly a philosophical inquiry. for instance, it looks to me that the dominate physics causality model goes something like: "Now" is a thin shell advancing in time and it contains all the causes for the next "Now". If you are a reductionist, this probably sounds fine, but if you are not, it is pretty silly.

Well, as it's theorized the Milkyway has already swallowed others (reference missing), there should either be multiple black holes in our galaxy, or this provides a good estimation of how long it's been since that happened -- according to Einstein, of course.