As I stand at the visitor center desk, which includes the cash register for the Devils Tower Natural History Assoc. bookstore, I have had the opportunity to observe thousands of people pay for merchandise. It amazes me the complexity some people put into as simple of a task as paying for a book. First of all, the amount of people who still pay with cash amazes me. To be fair, a high percentage of people who have visited the bookstore lately are old. Old people use cash much more than do younger people, likely due to the relatively recent explosion in the use of credit cards. The old people also amaze me in their use of a device I though surely went out with the passing of the age of 9. This device is the coin purse. I've seen all manner of coin purses (I'm strictly talking about a small container made to hold coins here, mind you). My favorite style is one made of leather in a spiral pattern that collapses down on coins laid flatly in its center. Now, old people have been around for a long time. They've probably learned a thing or two in their day. I think they may be on to something in their use of coin purses. Personally I just keep coins in my pocket for a day and then throw them on my dresser that night before bed. I never put them back in my pocket to use the following day. I've probably lost dollars upon dollars because I lose the coins or put them in a receptacle with the never-accomplished goal of exchanging them at the bank.