You know the one...it's caused divorces and empires to fall.
Now the indisputable science on the topic sets the record straight. From the Turley law Blog comes a submission from Guest Blogger David Drumm (Nal):
In the effort to keep our readers fully informed of the most controversial issues of our day, we at the Turley blog turn over every leaf. While other cultural wars rage on, it is time to turn our attention to this pressing issue. The correct way to hang toilet paper, over or under?
The miracle that is modern physics has solved this contentious debate.
As shown in the following scientific diagram the visibility of the leading sheet of paper is greatly enhanced when the roll is unwound from the top. Reaching for the unwinding point when the first sheet is out-of-sight leads to frustrating moments of blind grouping. Over a lifetime, these frustrating moments add up.
The one-handed tear technique is also facilitated by the over-hung roll. The over-hung roll leads to cleaner tears without those partial pieces of the next sheet that dangle untidily
Whether you're a one-ply or two-ply user, the evidence is unmistakable, over is correct.
And of course this demonstration can be used as solid evidence in divorce cases.