In fact, it is my whole argument, expressed at considerable length in my book, that we must all be servants of objectivity. (firstthings.com)
It's fun to play both ways, and given the game's considerable length there's a lot of content being provided here. (rotorob.com)
The former allows you to soar for considerable lengths of time, which is good for water - heavy stages, while the latter will actually turn you briefly invincible and give you items when you land. (segadoes.com)