Originally Posted by aptboeses

Using credit cards make it easy to lose track of spending, whether on a plane or in a mall — in some ways even easier, said Martin Lindstrom, author of “BUYOLOGY: The Truth and Lies About Why We Buy.” “Most of the money spent on planes is in the form of micro-payments,” he said. “A blanket, a movie, a sandwich. It all adds up on the credit-card bill but not in our brains. We can quickly forget the money we spent on this-and-that, yet realize the full consequences only when the bill arrives.”