A little while ago a new product was introduced to the world The Incredible Jerusalem Compass. This amazing product seems to "defy nature" and always point to Jerusalem so you can find your way home. How cute.
This device, however, is a farce. You can't defy the laws of nature. I have this mental image of Rambam rolling over in his grave, going to the local Seforim Store, buying a copy of Sefer Mada and smacking some one on the backside of their head. It is products like this and people who believe that this could work that allows Karl Marx to assert that "religion is the opiate of the masses".
Let it not be said that one does not need to face Jerusalem to daven. I once asked a student why we face Jerusalem, she replied "because our prayers need to go there before they can be heard by HaShem". This same student believed that we use Hebrew because G-d only understood Hebrew; needless to say these errors were rectified immediately.