Grocery math

http://blog.mrmeyer.com/?p=4646

Ever wonder what's faster... going through the express line at the grocery store with a few people or standing in line with one person but with many items?  well this guy figures it all out, and statistically you're better off waiting behind the lone shopper with many items.  From this guy's calculations and observations... there's a much longer wait associated with an extra grocery shopper rather than adding an extra item.  Makes plenty sense!  but I'm a pretty big fan of the self check out haha.  I've also realized why I never enjoyed math reading this...