Very funny/interesting. Like how people don't hear the train anymore when they live right next to the tracks. Or don''t see the mess in their house anymore because they have gotten used to it. overlooking what is ríght there! I find this very interesting material.
Reminds me of that effect where people miss a guy in a gorilla suit when focussed on another task. This has nothing to do directly with the scenario here, but is also an interesting psychological phenomena :)
TLDR> Interesting how people can get so used to things, they fail to see the obvious. Sorry for the big post :)
Yea, I guess they just like being difficult or something.