I have taken that course and I second the notions above. It won't be of particular advantage. Perhaps a little, but certainly not enought to warrent needing it. Plus, games are the easiest to improve on and the more you do them the better you get.
... the flagellum confers no survival advantage. Why? Because the flagellum needs ... a few parts confer no advantage? What if it's the ... parts would confer no survival advantage" would fall apart.
... between swimming and a survival advantage. Because, if swimming is not ... necessary for survival advantage then the argument (vague as ... the organism in other survival advantage ways.