> It is often said that birds have far superior lungs than mammals. So mammals are failures compared to birds… I've never heard this argument once in my life,

> It is often said that birds have far superior lungs than mammals. So mammals are failures compared to birds… I've never heard this argument once in my life, and Google doesn't come up with too much discussion on it beyond a few articles discussing the differences. This point struck me as a bit of a stretch, and the blog post itself is probably stronger without it.