[yorwba]

Yeah, Deutsche Bahn can find a route from Berlin Jannowitzbrücke to Barcelona Sants that takes less than 20 hours (as opposed to 2 days) https://www.bahn.de/buchung/fahrplan/suche#sts=true&so=Janno...

Hopefully, the existence of a black-box oracle makes it easier to find out where the gaps are.