that just sounds like your randomly allowing ' take 10 ' s ' without actually explaining the mechanic , cause a take 10 is perfect in situations sich as that , you cant use it during diplomacy , but for a small gap , or disarming something , its the ideal situation for a take 10 . the reason why a rogue who is prof fails is simply because no matter how skilled you are , there are hundreds of different little things affecting you each day , and some days you just fail because of it , and others you overwhelming pass due to them , thats why there is a range of 20 . <| sep |> Good ideas . And the building wouldn ' t be JUST for the security guard , it would be like a maintenance building for storage and system things lighting system , power grid , etc . , plus other stuff .