There was an expectant atmosphere as the 120 participants gathered on Wednesday, 18 May 2016 in the Lecture Theatre of the Zeeman Building at the University of Warwick at the start of the Europhysics conference on the Dynamics of Complex Systems. The meeting, held in honour of the forthcoming 60th birthday of Professor Robert MacKay FRS, had a line-up of speakers drawn from the greats of pure and applied dynamical systems, mathematical physics and complex systems science, all areas in which Robert MacKay has made significant and lasting contributions.