Hmmm. The vast majority of space object's orbits are stable enough in orbits avoiding us: 1. We wouldn't be here if it weren't the case 2. They would have already collided. Do we really want to destabilize an otherwise…
To add to your comment in the title "Prehistoric" , "before history", means before the advent of writing, i.e. 5 000 years or so; history originally referring to times that have written records. "History" itself now…
I'll add that debt is the integral (well sum) of deficits. deficit/GDP, or deficit/revenue ($4T/$3T = 33%? is that right?) is far more worrying than just the debt/GDP. However, I will concede that GDP as a measure of…
Look up what ended Japan self-imposed isolation.
Hmmm. The vast majority of space object's orbits are stable enough in orbits avoiding us: 1. We wouldn't be here if it weren't the case 2. They would have already collided. Do we really want to destabilize an otherwise…
To add to your comment in the title "Prehistoric" , "before history", means before the advent of writing, i.e. 5 000 years or so; history originally referring to times that have written records. "History" itself now…
I'll add that debt is the integral (well sum) of deficits. deficit/GDP, or deficit/revenue ($4T/$3T = 33%? is that right?) is far more worrying than just the debt/GDP. However, I will concede that GDP as a measure of…
Look up what ended Japan self-imposed isolation.