Biz Stone Is 40

Remember how, back when Google co-founder Sergey Brin turned 40, we noted that the occasion offered an opportunity for “those of us over 40 [to] feel confirmed in our own senses of failure in life,” and gave “those of us who have not yet turned 40… however many years until we do to have our failures in life confirmed”? Well, that is true again today — although to a lesser extent because Twitter — as Christopher Isaac “Biz” Stone, who had a hand in the microblogging service, reaches the same landmark. What are you doing?