Tamas Landesz, Director of Administration and Finance at World Health Organization in Cairo, presented the ´World 50.0´ project, an open source project which he and Sangeeth Varghese undertook, and in which they asked selected ´thought leaders´, students (being the leaders of the future), and artists how they foresaw the next 50 years. One point that was raised in the discussion was how to aggregate, reconcile or negotiate diametrically opposed predictions.