We recently had a new lock installed at one of the homes we manage here in Sacramento. The lock was a dead bolt, key outside, and a switch or latch inside. It all seemed to go well until the tenant called a day later.
It seems that the technician installed the lock so the switch works backwards. In most cases, the switch moves over the top to the jamb to lock the door and goes back over the top toward the door hinge side to open the lock.
In this case, if you move the switch to the jamb, it opens, and away it locks. It seems a minor point and the lock works just fine. Our tenant however feels disrespected and says the lock functioning this way is not "natural". Now I don't know where you come from, but prehistoric man did not have locks, so natural does not seem to be a part of this discussion.
After I got over the part of don't these people have more to do in their lives, we sent our guy back out to reverse the switch.
Now everyone can sleep a little better tonight and it will only cost me some money, which seems to be the "natural" order of things.