👉 Twinness is a concept in mathematics, physics, and philosophy that refers to two or more people who are of equal age but have different birth years. In this context, "twin" means a pair or an individual with the same year of birth, as opposed to twins, which are individuals born at the same time and share the same parents. Twinness is often associated with the concept of "clockwork generation," where two people are related because they were both born on the same
