[JesseK]

So...the floor looks like carpet. Dave's game hint is "What is may not be what it [seems]". So it's not really carpet. It is flat though. Or is it?

Or perhaps the hint refers to how hard it can be for a robot to open the gate. Field reset volunteers know what I'm talking about. It's a simple latch ... except ... Or perhaps it refers to the hump underneath the gate, meaning the field isn't flat.

See, it's so ambiguous I simply must be correct.