I'll wrap up our series of trisections talks by discussing the relation between trisections of 4-manifolds and open book decompositions of 3-manifolds, and then presenting a series of open problems that I think are important.
Links:
[1] http://www.mpim-bonn.mpg.de/taxonomy/term/39
[2] http://www.mpim-bonn.mpg.de/node/3444
[3] http://www.mpim-bonn.mpg.de/TopologySeminar