It may be dangerous to your mental sanity, if you are unable to follow the instructions, accidentally skip a step, and then complain online that it doesn't work
it will make the 3DS explode with fire and fury and will send a message to nintendo containing a 3D picture of you taken by the 3DS 3D camera along with your GEO location based on your internet connectivity. So you better put the 3DS in flightmode before you do it.
After this Nintendo will send their agents after you. Since the 3DS blew your hands off they won't snip off your fingers to make you talk but instead your toes.