So this book was when I was writing it, there wasn't any philosophical work on vaccine hesitancy so vaccine hesitancy is the attitude of ambivalence or uncertainty around vaccination. And there was there's a lot of psychology research, a lot of various other social science research and public health research into this topic, but as of yet there hadn't been a philosophical account. So I wanted to work on that. And in the book, I reframed vaccine hesitancy away from the common thinking about the issue, that it is a problem of ignorance or irrationality, or that people have some kind of anti science sentiment that drives vaccine hesitancy. I did acknowledge that it often looks like that when people ignore medical advice, or they repeat things that they've read on the internet. But there's lots of evidence that science illiteracy is not the cause. Some of the evidence is that plenty of has there's plenty of hesitancy among educated people. And it's also well documented that educational campaigns were were, let's say vaccine facts are separated from vaccine myths. They don't do much to change vaccine attitudes. And you would think if there was an educational or knowledge deficit, that's exactly what would happen. People would say, Oh, well, now that I know. So I mean, that. That was interesting to me when I when I started reading into this, because the fact that these campaigns don't work very well, this should tell us that there's some something wrong with the initial assessment. But instead, I found that this, this, this knowledge deficit model is surprisingly resilient. In fact, it is usually the audience and namely the vaccine hesitant public that are blamed for health communications failing to have a serious impact. So I wanted to think about what else could it be if not some kind of science problem, or science illiteracy problem. And I drew from my background in social epistemology, feminist philosophy and philosophy of medicine and science to propose an alternative framing of what I call the war on science. And I said that what we had here was actually a crisis of trust. And I paid attention to the reasons that people give for not trusting, authoritative advice and the kinds of things that came out were very informed by my feminist philosophy background, things like past and present harms associated with industry funding of biomedical research. Medical racism and injustice actually looms large as rational reasons for mistrusting medical advice, not to say that vaccine refuses are right. But I will say that the work of fostering and maintaining public trust has not been sufficiently attended to by healthcare institutions. So vaccine hesitancy as a whole, it's a symptom of this neglect.