Right. We don't have a perfect model of the solar system, or Earth for that matter. Of course, with a perfect model, we could predict orbits (or any other physi

Right. We don't have a perfect model of the solar system, or Earth for that matter. Of course, with a perfect model, we could predict orbits (or any other physical phenomenon) perfectly. I think crypto, being a digital phenomenon, is way more on the science side than orbital determination. Now, crypto on satellites poses a unique challenge, due to the interaction of solar radiation with electronics.