The presentation at the conference Data Traces was in German, hence also the slides. Below is unedited live written english translation created by Felix Gerloff. It's a impressive on-the-spot summary, but don't parse words.
Felix Stalder: "Politics of Data – Between Post-Democracy and Commons"
– culture as "trade floor" of meaning / interpretation
– topic: how the structure of theses processes of debating meaning in culture changed
– significant change today: big data sets instead of small data
– the quantitative change quickly becomes a qualitative change, because it needs different approaches to deal with big data