I’m torn by this. On the one hand it is awesome, on the other hand it seems too dependent on variable things - like freeze time of the ice ball to get the right wall thickness.

“Perhaps eventually? I mean it’s only in beta now.”

To be fair, 2000 year old Roman bridges that are still standing are not cast concrete like modern roadway bridges. They are stone masonry bridges which utilized concrete for gap filling, or segments of concrete clad in stone or brick. Similar bridges could be built today to last similar lengths of time but would be…