A Monash IVF mix-up that saw a woman give birth to stranger's baby after the wrong embryo was used could potentially lead to a legal landmark case. In this edition of The Conversation Hour we discuss the legal and ethical complexities around the case. Also, is it ever ok to compliment someone on their appearance,  if so, what are there d's and don'ts, and is it generally better to err towards don't? Plus, we look at the importance of swimming pools to local communities.