The article "Bound by a handshake" was published in the journal Science, Volume 391, Number 6789, Pages 988-989, March 2026. It mentions the Mithraic cult in Late Antiquity from about 270 to 430 AD. l., where believers bound each other by shaking hands (CIMRM 423). Archaeological findings, such as the recent discovery of dolichen in Vindoland, show that some sites remained in use until the late 4th century, disproving the notion of their violent destruction in the 3rd century. Studies of membership in religious movements, including Stark and Lofland's research on the Unification Church, show that religious affiliation depends on a desire to conform to those close to you. Only one in a thousand attempts to convert strangers will succeed, while the chance of converting a friend or relative is 50 percent. This pattern is repeated in many other religious groups. The article emphasizes the need for better investigation of areas such as the Danubian provinces or the Rhine border due to limited textual evidence and historical barriers.