At the conference

I Had planned on taking a tram to the University of Social Sciences where the conference is being held, but due to the road construction on the main street, there were no trams running in the direction I needed to go.  Found a bus schedule down the street passed the construction, figured out which bus to take, realized I bought the wrong kind of ticket.  Oh well, no one seems to check the tickets.  I was a tad late, but now I am here.  Markus, the creator of GeoGebra just finished his overview of the last ten years of GeoGebra, and where it is heading.