jennifer kavanagh is one of the authors of that book. and jennifer, let me put the first question to you. you said at the outset, in the introduction, that you wanted to find a clear definition of truth decay. you listed some trends, and in other ways, described what you had in mind. but let me ask you, how would you define truth decay, as you're studying it now at the rand corporation? jennifer: well, thanks for that question. we define truth decay as the diminishing role that facts, data, and analysis increasingly play in our political and civil discourse, and in the policy making process. and as you mentioned, we used four trends to bring that definition to life. the first is an increasing disagreement about facts and data. an example would be the disagreement about the safety of vaccines. as we get more and more data that vaccines are safe, we see an increasing number of people that believe that they're not, and that was true before covid-19 was even something that was on our radar. the second trend and the third trend go together, a