Javari is teaching a psychology class and tells his students, "kenna is 31, single, outspoken, and bright. she majored in philosophy in college. as a student, kenna was deeply concerned with discrimination and other social issues." when javari asked his class if it was more likely that kenna was a) a bank teller or b) a bank teller and a feminist, most people in his class chose option b. javari explained that their answer was incorrect because their heuristic led them astray