a trip to the doctors

so i just came from my physio session in the afternoon.

while i was waiting for my turn, i saw this giant of a doctor talking to a patient, who had a cast with a special shoe over his right foot.  the doctor was trying to explain something to him.  the patient obviously felt that talking to him while seated was either uncomfortable or discourteous, so he stood up. the doctor then asked him to be careful and sit down, and then proceeded on with their discussion.

within seconds, the patient stood up again, before the doctor asked him to sit down again.  after two more times this happened, the patient finally lost his balance and tripped.  fortunately, he only fell back onto the chair, sustaining no injury.

so i was watching this spectacle rather curiously.  why didn't the doctor just sit down beside the empty sit beside the patient, who clearly was NOT going to stay seated to talk to the doctor?

of course, i could say all i want, because
1) there's no guarantee i won't overlook the exact same thing if i were in his shoes, like the saying goes 旁观者清 (which means things are clearer to someone spectating)
2) maybe the doctor was REALLY REALLY busy at the end of the shift

anyway, my point is, i think if we remember to apply some common sense, and try to see things from the users point of view, we would be able to provide a much better user experience.