Imagine that you are a regular Italian commuter on Line 2 of the Milan Metro subway. The train pulls up to Moscova station and you get off as usual. But wait! This isn’t right! You must have dozed off. This doesn’t look like Moscova station; it doesn’t even look like Italy. Like Captain Kirk in “Star Trek,” you’ve leaped time and space and have been beamed to Shibuya station in Tokyo.