Gianne Derks and Tom Bridges were invited speakers at the Conference on “The Dynamics of Complex Systems: A meeting in honour of the 60th birthday of Robert S MacKay FRS“.  The conference took place at the Mathematics Institute, University of Warwick during 18-20 May.  A link to the website and programme are here.  Gianne Derks spoke on “Sleep-wake dynamics: an interplay of maps, gaps, and naps“, and Tom Bridges spoke on “Baesens and MacKay (1992): theme and variations“.