Ah yes, I see it clearly. Clever use of the two figures in the opening - one looking back into his past while the other crosses from right to left signifying a lost opportunity (ie contra to moving towards opportunity in a left to right direction). A positive action is needed to move from the light outside, through the dark lobby towards the area overseen by the cherub even though the doors of opportunity are standing open. The lights are on suggesting that, once taken, this opportunity will lead to furtherment in the 'light' or the 'dark' while its specific nature is hidden to us (lying off to the right) and only seen by the cherub. Fascinating stuff indeed!