> What would be achievements of similar impact that might be more achievable? Artificial intelligence. By a gigantic margin. Fusion would be very expensive and

> What would be achievements of similar impact that might be more achievable? Artificial intelligence. By a gigantic margin. Fusion would be very expensive and likely not competitive with fission, due to vastly more complex and expensive reactors. So effectively useless. Quantum computers: Nobody knows what they would be practically useful for, not even experts like Scott Aaronson. (No, cracking RSA is not useful.) Room temperature superconductors: The most realistic example I have heard about them is ... smaller MRI machines. Great.