Every soap has done The Kid Trick: A woman is pregnant for 19 months before giving birth to a premature baby (usually in a cabin in a snowstorm). In one year the child is walking and talking. In two years the child gets hit by a bus on the way home from school. At three years the child is shipped off to boarding school/shipped off to thes relatives/playing with the child who lives across the street. At four years the child is having a first adolescent affair, and at five years the girl/girlfriend is pregnant, starting the whole trick all over again.
Soaps also have people who disappear and are never mentioned for years. Then one week seven people mention them, and the next week they show up.