If you were standing behind 78-year-old Harriet Chance in the supermarket checkout line as she dug in her purse for her coupons, you would sigh and roll your eyes. But Jonathan Evison is here to assure you that this most ordinary of old ladies isn’t what you think. She may keep her hairdo and flower beds tidy, and address everyone as “dear,” but don’t be fooled by her chipper demeanor.