Not a physicist but I was under the impression we already knew this. For example if someone is falling into a black hole, to an outside observer they never cros

Not a physicist but I was under the impression we already knew this. For example if someone is falling into a black hole, to an outside observer they never cross the event horizon, just fall asymptotically slower towards it. But to the person falling in, he gets ripped to shreds. But I guess we haven’t tested that out.