The short URL for the PDF is <a href="http://ibm.co/WhyIBMi-2012v2.">http://ibm.co/WhyIBMi-2012v2.</a> (Fair warning: the file is big: almost 21 MB.) If you follow me on Twitter, this news is a few days old, but bear with me -- I can say more in a blog than I can in 140 characters.