Preface

This issue contains a selection of the submitted paper from symposia sessions on the program at the 2022 biennial meeting of the Philosophy of Science Association (PSA) in Pittsburgh, Pennsylvania.Symposia proposals involve a unifying theme for a set of talks; they are adjudicated based on abstracts, with an aim to generate useful interactions among speakers on the topic.Accepted symposia presenters then have the option to write up their talk and submit it for consideration for this special issue (separately from the other journal submission processes).The 2022 PSA was notable for strength of the junior members of the field and for the diversity of topics that were presented.The symposia drew together scholars at different career stages, from different kinds of backgrounds, and from different geographical areas and institutions.They are an opportunity to get specialists together on topics of new and emerging interest for a focused discussion, and often galvanize the directions that discussions take in upcoming years.Included in this issue is the presidential address for the 2021-22 president of the PSA, John Dupre.This presidential address was given in person at the 2022 meeting.The work of the Program Committee is foundational for PSA meetings, as they review all contributions in the main program, as well as reviewing submissions for publication in these two special issues.These papers that came out of symposia sessions have been through the highest degree of peer review: The initial symposia proposals were reviewed by three or more committee members for selection onto the program, and then final papers that came out of those