Just one thing though: if you are going to go to the trouble to build such a big and expensive machine, why not build a linear collider? I realize it would take more land, but I'm sure they have it and the science would be even better. Correct me if I am wrong, but after the second refit of the LHC, isn't the next big international European science project going to be a big honking linear collider? At that point, it won't matter that China's collider is bigger, you can get more interesting results from a gigantic linear collider. Although the idea of a super-proton collider does tickle me a bit.
Please don't ruin this by turning it into a video interview where you don't actually ask anyone's questions like you did the last one.
Speaking for a lot of us.
It'd mean starting over from scratch with a whole new architecture, redoing decades of work in hardware and software.
So? I would say that is bound to happen eventually anyhow. Traditional integrated circuits are quickly on their way to becoming a stick in the mud. Something fundamentally different will have to replace them eventually.