2021-10-07

• Daily Log:
  • Tesla Stockholder's Earnings Call
    • Rockets Equation applies well to factory efficiency
      • $\Delta v=v_e\ln\frac{m_o}{m_f}$
        • $\Delta v$ is the maximum change of velocity
        • $m_o$ is the initial mass, with propellant (wet mass)
        • $m_f$ is the final mass, without propellant (dry mass)
        • $v_e$ is the effective exhaust velocity
      • Named after Russian scientist Konstantin Tsiolkovsky
    • It takes us just as long to build a factory compared to getting to full production level
• Retrospective::
  • One week ago: [[September 30th, 2021]]
  • One month ago: [[September 7th, 2021]]
  • One quarter ago: [[July 7th, 2021]]
  • One year ago: [[October 7th, 2020]]
• Daily Stoic::
  • When you do something wrong, it often makes yourself feel sick because you are wronging yourself