The Los Angeles musician who helped design the microphones on the Perseverance rover that will hopefully give us our first-ever audio recordings of Mars. Can a 19th century etiquette book make Twitter bearable? And what some of the top websites looked like on this day in 2011.Sponsors:Skillshare, Get a free trial of Premium Membership at skillshare.com/kottke OurCrowd, ourcrowd.com/kottkeLinks:The LA Musician Who Designed a Microphone for Mars (Wired)Everyone on Twitter Needs an Etiquette Manual (Wired)Ten Years Ago (Neal.fun)r/Stuck10YearsBehind (Reddit)Kottke.OrgJackson Bird on TwitterSee Privacy Policy at https://art19.com/privacy and California Privacy Notice at https://art19.com/privacy#do-not-sell-my-info.