Blu.

The sheer effort, I think, is just silly. When watching I think about, what happens at night, do people know about it enough to plan any sort of vandalism to ruin his work? How much does it cost to hire a crane? Does he change his mind of locations? How does he get permission? Does he even bother getting permission? How many photos are taken? How long, in days, does it actually take to perform such a task? 

Honestly, it's a million questions.

BLU