The biennial essay contest of the Foundational Questions Institute (FQXi) is an opportunity for the community to reflect on foundational questions of physics. This year's contest focused on the concepts of "Undecidability, Uncomputability, and Unpredictability". Are there, for example, real consequences for physics — including quantum mechanics — of Gödel's theorem? Are there implications for our understanding of the relations between agency, intelligence, mind, and the physical world? Markus Müller, group leader at IQOQI-Vienna, investigated these topics in his essay "Undecidability and unpredictability: not limitations, but triumphs of science" and was awarded the first prize by the panel. Flavio Del Santo, PhD student at IQOQI-Vienna, was awarded the third prize with his essay "Indeterminism, causality and information: Has physics ever been deterministic?". Both essays also had a great public success during the phase of online voting and commenting.