<prompt> Human: I use a Discover credit card. Every month they send me a detailed report of my FICO score. Ive been sitting in the 730s range for a long time, 2 years to be exact... I went car shopping last year and the salesman asked me if I knew my credit score, I told him yes and told him my credit score was above 700. When he checked my credit he told me it was in the 600s. I was very confused since my Discover card statement has always estimated my score to be in the 700s. Its always bothered me a little. Edit: wow, I just realized I called my FICO score my FIFO score. Im a nurse and for those of you who use Teletracking, hopefully you will understand how easy it is for me to accidentally use FIFO instead of FICO.  <response>: Its like your LIFO score but you end up paying more in taxes. 