Fortune Live for October 9, 2015: Dell and EMC merger talks, Siggi's Dairy, and GitHub CEO Chris Wanstrath

On Fortune Live, host Leigh Gallagher welcomes Siggi's Diary CEO Siggi Hilmarsson, GitHub CEO Chris Wanstrath, Date-onomics: How Dating Became a Lopsided Numbers Game author Jon Birger, Fortune assistant managing editor Brian O'Keefe and writer Erin