MattOur guest blogger, Matt, makes another appearance.

So Heather and I were in Costco the other day.  We love Costco.  Costco provides a good, real-world example of orders of magnitude.  You go there with a list, and the number of items that you leave with can often be expressed as follows (where X= the number of items on your list):

 

X10

 

or

 

X100

 

or

 

X1000

 

etc.