I vaguely remember an index for the number of earthmoving machines per capita for a given country. It was a really good indicator for productivity. It doesn't seem like industrial robots have the same level of correlation. At least not yet.
I'm in the accelerated testing group and I was moved from Mail to the new Outlook a couple of months ago. It's better than Mail for Windows in my subjective opinion, but it was a bit weird to switch just when Mail had gotten the last missing basic features, like signatures etc.