The talk was fantastic. I think was Stefan first talk and he did it well a bit nervous but well delivered. The only issue he had was in the demo, didn't work as he expected.
To be honest I was expecting more from this talk. Michel was very nervous and I felt that he was not well prepared. You should prepare better your talks and probably don't had too many different topics in one talk. Would be better if you focus only in one component instead of 3 or 4.
Another great talk by Ricardo. His expertise on the subject is a plus and the way he prepares his talks makes them easy to follow and to understand.