Putting two or more light switches on the same panel will keep homeowners confused for decades, according to a new study. Researchers have concluded that it frequently takes people multiple attempts to locate the correct light switch, even if they’ve been living in the same property for many years. Like many people, homeowner Simon Williams presses light switches after dark in order to see things. And like many people, he often manages to fuck up even this most basic of tasks on a regular basis.