On this week’s episode of Slate Money, host Felix Salmon chats with co-hosts Cathy O'Neil of mathbabe.org and Jordan Weissmann of Slate about scarcity-based valuations of music, the wonders of short-selling, and the fortune cookie theory of patent law.   This week's sponsor: This week’s sponsor: Citrix GoToMeeting! Visit GoToMeeting.com and click the “TRY IT FREE” button. Join Slate Plus! Members get bonus segments, exclusive member-only podcasts, and more. Sign up today at Slate.com/moneyplus

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