Have a look at the photograph of the pile of papers and write a post to the Discussion about how you would measure its thickness. I want to leave this up to you so I’m not going to give you much more direction than that. This may seem silly but it has a few real world applications. For example, an ecologist may be interested in the thickness of a leaf litter layer on a forest floor but she wants to compare her results to other forests and other workers. The pile of leaves on the forest floor would look a lot like that pile of papers and she needs to measure it. So, given this problem how would you solve it?