I am currently in the process of writing my SoP for applications to Ph.D. in Physics programs starting Fall 2018 (in the US schools). I am definitely writing about the content that I have studied rigorously as well as about the research projects that I have been involved in and so on. But I also want to involve something about a paragraph (**not** a specifically small one) about some of the colloquial talks and articles that I have read during my undergraduate years that have played a significant role in shaping my interests inside theoretical physics. I have been quite a YouTube buff and have watched a lot of semi-popular level talks and have been quite motivated by them in my interests. These talks have been very useful in making me aware of the current frontiers of research as well as in narrowing down my interests for good. Of course, these are not the only factors but these are among the non-negligible factors. So, I wanted to ask whether mentioning this part would be considered good or it would give my statement a non-serious and a childish tone. Or worse, might it look like I am confusing real physics with what is shown in the popular level talks?
Along with anyone interested or knowledgeable about this kind of a situation, those with a first-hand experience of looking at someone’s statements with such references or those with a first-hand experience of writing such a kind of statement are particularly requested to comment/respond.