My kitchen light switch is on the right hand side as you walk in the room. I've been in this apartment for going on three months now, and I still instinctively reach out with my left hand to turn on the kitchen light. I don't know what's more annoying -- the fact that it was obviously designed wrong (it's not just me, I have consistently watched visitors do the exact same thing), or the fact that after three months I still haven't adjusted for it.
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