> What I'm saying though is that the economics of fusion don't work. The temperature range, magnetic fields etc won't ever be 'cheap'. This feels like arguing

> What I'm saying though is that the economics of fusion don't work. The temperature range, magnetic fields etc won't ever be 'cheap'. This feels like arguing that computers will never be cheap, because look how much it costs to build a 1970s mainframe. How could anybody ever afford to have that in their house? Meanwhile it turns out that EUV lithography requires some fancy equipment but when you mass produce it, the result is that everybody has one in their pocket.