Inspection
Put a guard at your gate to get a good inspection of your neighborhood going. The guard will stand there all day inspecting everything and then report it all back to you. You won't have to do any of the inspection yourself!
Imagine the guard doing his inspection in front of the gate all day long. He should have a nice report for you once he's done.
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His inspection is complete, but it looks like he's used an etch (えつ) a sketch to record all the results. That's not really helpful. If you shake it all the inspection results will disappear!
If you hire a guard to stand at your gate and conduct an inspection of your neighborhood, make sure you tell him not to use an etch a sketch!