As to travelling backwards, you will first have to borrow Elon or the government's warp drive spacecraft.  Then you could travel towards the black hole and turn around at such time let your satisfied you've gone into the future enough to get enough information to take action now that will affect the future which is essentially traveling backwards in time but it's from a future point to the essentially the present or not exactly the present but wherever the present is at the beginning of the warp bubble AKA wormhole of sorts that the spatial created for itself and I suppose they could take the warp drive and steer it anywhere they want but wherever they stopped and got out it would be the time that elapsed at that place at whatever rate it prefers naturally for things to occur over the maximum entanglement speed for that place and that might even be the best way to say it but everything that moves through space wherever there is an event in space everything that was there a moment before has to sort of be re entangled into where it is and was doing the moment later and a lot of that is affected and very small localized places like on the earth in a way that has to also account for the apparently vote you know autonomous volitional activity choices of you know what amounts to I think something that can to a human artificial intelligence machine which is kind of cool anyway but it seems like these machines are still sort of being worked out in terms of their I don't know what the word is maximum level of potential you know we're just trying to make people be happy and utilize their skills I certainly don't want to get creative about you know all kinds of quantum abilities to augment things and stuff that people do can you act like a Quantum tattoo it's like hey why do you look like a tattoo isn't that great it's like well yeah you know cool how to make a law that says you go to like flash something that's recognizable and identifies and cause some Spirit which is representing you know in your field of perception somehow you get a represent you got to appear to be what you say to meet you to be I think in the quantum world that's got that happens often which is a good thing she's going to have to know how to start to figure that out but yeah and the connection between humans is probably about is probably about as good as it can get without some really strong efforts to communicate further and I don't know too many people who can understand most of what's been said here I don't know that I personally anybody that can truly understand it and to whatever extent that I know