Econ 4 – Introduction from Softbox on Vimeo.


Lisa Randall — physics professor, theoretical physicist, and expert in elementary particle physics and cosmology — interviewed by Charlie Rose (PBS) on her new book, Knocking on Heaven’s Door: How Physics and Scientific Thinking Illuminate the Universe and the Modern World:

Here’s something she said that I really liked: “Every fact you have comes with uncertainty… You understand something only if you understand the uncertainty of what you are saying.”