In informational publications, publications about double people often appear. It is believed that every person on Earth has a copy of it. It's just that no one has ever looked for their own kind, just as the passengers of one London flight did not look for them.
The entire cabin laughed when Neil Douglas and Robert Sterling sat down in their seats on the plane. Friends say that they were not familiar at that time, but from the outside looked like twins. The anecdotal situation made friends bearded doubles.