> ( ) planetary-scale engineering is impractical I find your lack of vision disturbing. Given that we likely need planetary-scale engineering anyway in the ne

> ( ) planetary-scale engineering is impractical I find your lack of vision disturbing. Given that we likely need planetary-scale engineering anyway in the next 50-100 years, getting a few asteroids to nudge the earth’s orbit a bit over a long period of time isn’t that much of a stretch. With asteroid mining it might even pay for itself. Note: I didn’t do any calculations but over millions of years we’ll need to stabilize earth’s orbit anyway, otherwise our calendars will get out of sync even more. Of course we’ll have to deal with the inaccuracies of the Gregorian calendar rather soon, in 7000 to 8000 years.