You know what boggles my mind?

I just came to this realization today.


You can post things on your walls, and adhere them only with magnets!!!

In any timber-framed, dry-walled house, you have studs, with galvanized steel nails in them. The principle of the stud finder -- locating the studs by a freely-rotating magnet which aligns itself with the nails -- shows this.

I am astounded that I have lived 26 years without knowing that you can just use a magnet (better results with a high-powered one) to stick things to the wall.

Amazing.