It’s actually a bit worse - we don’t actually know it’s doable in theory - when you dig into all the steps involved.
We only know it’s doable in the sense that fusion itself has a large net energy release. We don’t know if it’s even theoretically possible (net energy release wise) in the conditions we can potentially create on earth outside of a nuclear explosion.
We only know it’s doable in the sense that fusion itself has a large net energy release. We don’t know if it’s even theoretically possible (net energy release wise) in the conditions we can potentially create on earth outside of a nuclear explosion.