at the same time, we find a great deal of economi vulnertibility.looked at how that aclaces we found that 80% of americans are in a situation of serious economic hardship some time during their adult life course. so actually, our story will be more about a lot of mobility and a lot of insecurity. >> robby hilton smith, how does that show up in what people say about where they fit in the wider society, how they think they are doing, and how they think their kids are going do. >> it's interesting. i think people as you mentioned have a little bit of a misconception about where they fit in to the income distribution and where they fit historically, how their father, parents, and grandparents are doing and how their kids are going to do. you ask some of the middle class, a huge swath of people say that they are. right? but as the professor mentioned, this could vary a ton throughout their life. someone can really go from, you know, being middle class couto upper class in to the lower part and, you know, i think that that security has increased and incre