at position 1 Sarah says that she is hungry. John hands her a piece of pizza. Sarah eats the pizza and then declares that she is no longer hungry. a) The fundamental problem of causal inference seems to say that you can't know that Sarah eating the pizza had a causal effect on her no longer being hungry. Is that right? Explain. b) Do you think you nonetheless have good reasons to believe that eating the pizza had an effect on Sarah no longer being hungry? Explain why or why not. c) Do you have good reasons for believing that John handing Sarah the pizza had a causal effect on her no longer being hungry? In your assessment, are the reasons to believe John's actions had a causal effect better or worse than the reasons to believe Sarah earing the piece of pizza had a causal effect