Can you spot how this worker has cantilevered his scaffold decking off this apartment block balcony?
The answer is the ghostly man in the background. He is acting as a counterbalance by standing on one end of the scaffold decking. His colleague precariously perched over the balcony is using a nail gun to secure timber slats to the outside wall. Thaks to Jonathan Estabrook at Whitbybird for spotting the misdemeanour.