The series in which readers answer others’ questions on subjects ranging from flights of fancy to profound scientific concepts. This week, friends reunitedAre school and college reunions good for us? Or do they just confront us with uncomfortable past versions of ourselves and others, keeping us trapped in old, unhealthy patterns?Post your answers (and new questions) below or send them to nq@theguardian.com. A selection will be published next Sunday. Continue reading...