Left, right, left, right...

What's with all this fuss about who should sit where on breakfast TV?  Is the left-hand seat - as we look at it - for the man, or for the senior presenter?  The question has arisen (apparently) because following Bill Turnbull's retirement from BBC's Breakfast programme, he has been replaced by Dan Walker, who is a newcomer to the game and who has taken over Turnbull's left-hand seat, whereas his co-presenter, Louise Minchin, who has years of experience continues in the right-hand spot.  Does it matter? Well yes, apparently it does to many people, including possibly Minchin herself.  It's been suggested that, as we read from left to right, we look at pictures in the same way, and therefore what's on the left is seen as more important.  I'd never have thought of it myself - what about you?