I admit I’m guilty of not thinking the details through when trying to plan certain things. Usually my wife will look at me and say “what about this... and this... and this”. Then I’m like “oh yeah, didn’t think about that”. So I’m sure that customers do the same thing. They have no idea how long things take, and like us, they are trying to make stuff fit their schedule. But usually if I explain the reasons that their request won’t work, they say “oh yeah, that makes sense” and accommodate what works.