Today on Slate Money, hosts Felix Salmon of Fusion, Cathy O’Neil, author of, Weapons of Math Destruction, and Slate Moneybox columnist Jordan Weissmann discuss:- The mysterious history of the Bic Cristal Ballpoint pen - Bond investing in a rising-rate environment- Hedge fund founder Anthony Scaramucci’s new White House roleCheck out other Panoply podcasts at itunes.com/panoply.Email: slatemoney@slate.comTwitter: @felixsalmon, @mathbabedotorg, @JHWeissmannProduction by Zachary DinersteinSlate Money is brought to you by Boll and Branch. Get 50 dollars off your first set of sheets by going to BollandBranch.com and using promo code money.And by Rocket Mortgage from Quicken Loans. When it comes to the big decision of choosing a mortgage lender, work with one that has your best interests in mind. Use Rocket Mortgage for a transparent, trustworthy home loan process that’s completely online at QuickenLoans.com/slatemoney.And by Vistaprint. Get 500 business cards starting at just $9.99 by going to Vistaprint.com and using promo code money at checkout.Learn more about your ad choices. Visit megaphone.fm/adchoices