  The direct theory distinguishes personal memory from factual memory (Hamilton 2003). “I remember hitting the winning serve” is an example of personal memory, which does not take form as a propositional attitude. Those memories that do take form as propositional attitudes, e.g. “I remember that I hit the winning serve,” are not necessarily personal memories. This is because I may remember hitting the winning serve only because my best friend has reminded me of that over the years. In that case my memory is not known directly by virtue of the fact that I have not thought in the first-person of an event in my past; instead, this memory arises through inference from testimony.