Life in NYC and SF are remarkably similar in the amount of walking that happens day to day. Unlike San Francisco, however, much of transit time is spent underground where there is no network connection and, as a result, the podcast is a standard accompaniament for Gotham walkers / subway riders. One that I’ve really come to enjoy is the podcast of the Andreesen-Horowitz (or, A16Z) venture capital business. A16Z has recently started investing in nootropics: materials that help keep you at top cognitive function and on [their nootropics podcast][pod] they had a really keen observation: as of this moment the human body is at a point such that it can be considered as a component, not unlike the Homebrew computer movement, (e.