> I don't see why that strategy wouldn't _fundamentally_ play out similarly for TBC.
Because they have given a reason why they expect lower costs. They don't expect to be able to actually reduce the cost of a boring a tunnel at fixed diameter; they want to bore smaller tunnels and assert that's good enough.
Because they have given a reason why they expect lower costs. They don't expect to be able to actually reduce the cost of a boring a tunnel at fixed diameter; they want to bore smaller tunnels and assert that's good enough.