>> The urn-paradoxon can be visualised by modern LED leading systems, >> see http://www.e-o-s.de/UBahnNrnbergZiegelstein.htm for an example. >> The warning light signals increase to infinity with increasing danger >> limiting in a calm red when the train has stopped. > > I cannot read German, but I couldn't see anything like a technical > description of that setup. Was there supposed to be an argument? > Anything related to the discussion at hand?
According to the PDF-document there are about 250 lamps where on/off is controlled by a PC while the train is arriving. The main thing is that one can not conclude from the states before the arrival to the state when the train has stopped.