Part 1 of the four episode series produced for the course Open Science for Physicists (OS4P).In this first episode of the mini series, cohosts Erik van Sebille and Sanli Faez will share their motivation for designing and teaching this course, and talk in some more about the concept of The Credibility Cycle, introduced by Bruno Latour and Steve Woolgar, and the five open science schools of thought. You can find more about the course at https://github.com/SanliFaez/OS4Physicists