I haven’t yet developed the theoretical framework which would support any practical implementation of this, but I’m sure the guys at Apple are working on the iTime as I write. It shouldn’t be too hard – after all, photons, when organised properly, can carry vast amounts of information (including these words), so why shouldn’t neutrinos be trained to do the same? It’s already commonplace to ‘print’ three-dimensional inorganic objects following a blueprint, so organic ones, like people, can’t be far behind. All we need to do is send an organic printer back to a pre-determined temporal location, scan oneself at this end, and hit ‘send and print’. The neutrino waves will do the rest, and there we’ll be, watching ourselves conduct that first fumble in the bus shelter. Or looking over Einstein’s shoulder as he gets special relativity wrong. Or observing that butterfly flapping its wings in the Brazilian jungle.
Of course, we mustn’t ever intervene. It’d be tempting though, wouldn’t it? There are quite a few things I’d be tempted to change given the chance.
PS To my regular silent watchers, greetings, you are very welcome. Feel free to say hello.