QUICK HELP: Is anyone familiar with Pure Data?

Where is the photoshop flaw in this picture? a. the fish is too large, b. the head has been pasted on another persons body,c. the guy has no hands, d. the background has been altered.

The ishtar gate can be seen in its reconstruction state in the plz

What are candid shots? what are posed shots? compare and contrast some of the advantages and disadvantages to these two approaches.