We don't know who Dan is, but apparently he's alive and well and living on a desert island in the Water of Leith.
This photograph was sent to Spurtle at lunchtime, having been taken earlier in the day below Warriston Junction.
Higher on the bridge, in chalk, are the words 'Viva Dan', suggesting he may have had support from a Spanish admirer before launching himself into the void.
If any reader can tell us Dan's identity or suggest a reason for his lonely sojourn, we'd be interested to know.