Excerpted from Think Better …
Among the many discoveries NASA made when it began sending people into space was that the astronauts’ pens did not work well in zero gravity.
The ink wouldn’t flow properly. You can simulate the effect at home by trying to write with the business end of your pen pointing up.
Pretty soon, the ink stops flowing and the pen won’t write.
The solution – giving astronaut’s a way to write upside down — depends on how you frame the problem …
