Hi Uncle Dan
Normally doctors don't recommend surgery at age 70 or older because some of the potential side effects can be more pronounced for older men. Nevertheless, if your friend really wants robotic surgery, he should pursue it with other surgeons until he gets the answer he wants. I was recently put in contact with a gentlemen who is 75, apparently in great health and he elected robotic surgery notwithstanding some of the negatives I pointed out to him. The key is for your friend to explore all options and then decide which option he feels is right for him. Have him read my thread on proton therapy if he hasn't explored this option. As we all know well today, if you are in good health and lead an active life, age is only a statistic. Best of luck and good wishes to you friend.