Classmate and friend John Harris was on local NPR last week, recounting an interview with a Parkinson's patient. Give it a listen on RealAudio.

Our school encourages these home visits with sick, elderly patients. I embarked on my first, very self-consciously. I thought my patient might resent my intrusion -- young, healthy, privileged, but still asking for more.

I walked away humbled. John's experience is somewhat similar, I think.