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Then Caitlyn “Katy” Kohler takes us inside expedition diving with Deep Wreck Expeditions: No Room for Passengers. Here, competence is only the starting point. Usefulness, reliability, logistics, and knowing when to refuse a dive can matter just as much. In Why Mexico Never Lets You Leave: Kim Davidsson and the Long Game of Cave Exploration, he looks back at Tulum’s modern cave-diving era and at what happens when exploration becomes a long-term commitment to survey, mapping, conservation, access, and teaching. The Cave Is Mapped. Now Who Owns the Data?, by Skanda Coffield-Feith, picks up another part of that story to answer what happens to cave-survey data after the dive. Wet notes and hard drives are giving way to collaborative version control, permissions, recoverability, and, above all, continuity. Jarrod Jablonski returns with Blueprint for Success #9: The Company We Keep, looking at the people behind our development: friends, teachers, teammates, mentors, and communities. Drawing on his own path through diving and exploration, he asks how others help us learn faster, see our blind spots, and become better—and why a healthy community must leave enough room to disagree. Finally, You Bought the Insurance. Did You Buy the Coverage?, by Alton J. Hall, Jr., brings risk management back onto dry land. Declarations pages, exclusions, claims-made wording, reporting rules, and defense costs may sound less exciting than a dive plan, but they can matter long after the gear is dry. Decompression models, equipment, teams, maps, insurance—and the communities through which much of our diving knowledge is passed.

Understanding what those systems give us, and where their limits begin, is part of becoming better divers.