As the debt ceiling deadline looms, Treasury Secretary Janet Yellen says a failure to suspend or raise it could mean “catastrophic” consequences for the U.S. economy and reputation. If Congress does not find a deal by October 18th, the country will default for the first time. Yellen addresses tax concerns, proposals to avoid default, and the longevity of her successor at the Fed, Jerome Powell. Plus, computing legend Michael Dell discusses his new book, “Play Nice But Win,” and recalls starting Dell 37 years ago from a bathroom, with just $1000. He reveals the real, unglamorous stories behind his success, and what it takes to quietly build an 80 billion dollar brand.  In this episode:Janet Yellen, @SecYellenMichael Dell, @MichaelDell Joe Kernen, @JoeSquawkBecky Quick, @BeckyQuickAndrew Ross Sorkin, @andrewrsorkin