I was reading the transcript of the investor call yesterday, noticed one of the things Cook is stressing is that they have never seen such high % of Android switchers. I wonder why they mention that metric - it sounds like a good thing at first, because they seem to position it as being a leading metric to indicate future market share. But if you think about it, the "% of iPhone purchasers coming from Android" metric probably just reflects the fact that their market share is declining (so a trailing metric from past market share). It seems strange to me that they stress this one so much while it's real value seems rather hard to define. Any one have any thoughts on this?