person A: It's amazing how much research goes in too helping others. 
person B: Definitely. The world is an extremely complex thing_comma_ and I don't know if we'll ever fully understand it.
person A: Very true! That is why everyone does different things. Very complex to keep it going! I was researching neurofeedback today and it's nice to see how much some doctors care about helping.
person B: I would imagine that people who have certain personality types are typically drawn to becoming doctors. They all seem to be very compassionate! 
person A: Well..I have had some terrible experiences with doctors as have many but there are some who do care about helping.