In technical terms, a coincidence refers to a collection of two or more events or conditions, closely related by time, space, form, or other associations which appear unlikely to bear a relationship as either cause to effect or effects of a shared cause, within the observer’s or observers’ understanding of what cause can produce what effects. Above, we have a picture of a cat and its owner who both have heterochromia of the eye – one iris is a different color from the other. Continue reading for more.