High quality talks

Unlike most of the conferences, UP only runs two parallel sub sessions after the plenary session. Talks are closely related. What you have just missed in one talk you may be able to find the answer in the next one. I am surprised by the high quality of the talks. Almost all the presenters have clear-topic slides, with animations and sometimes have movies as well. The speakers-- many of whom are not native speakers of English--speak fluently and clearly. I especially enjoyed the two talks by Francesca Calegari.