I doubt people will say general intelligence or fusion are "all engineering" in 50 years. We'll need some sort of breakthrough. There's the "weak" self drivin

I doubt people will say general intelligence or fusion are "all engineering" in 50 years. We'll need some sort of breakthrough. There's the "weak" self driving we already have and there's the "strong" replace a human or outperform a human in any situation which is more like general intelligence. These are very different kinds of problems. I'm not well versed in the details of the space program but I doubt there were many "impossible" steps that required some fundamental scientific advancement. But hey, +1 to the optimism that we'll still be around in 50 years ;)