Your grandma probably gave you all kinds of good advice that you should follow throughout life. “Wash your hands before eating!” “Tell the truth no matter how hard it is!” and “Do unto others as you'd have them do unto you!” come to mind.
Unfortunately, granny wasn’t right about everything. That feather bed she loved, for instance, is far below today’s standards. She may have been right about feather beds at the time, but technology has progressed.