All good points so the question we have is this.
Are we looking at this issue purely from a theoretical point of view (which the last couple of posts clearly are) or do we throw in the practical application of what we know and take into account the fact that we try to nullify the effects of headwinds and maximise our exposure to the more favaourable tailwinds?
Again, I stress this would depend on what kind of work you do.
P68