I read a story today which make me falling into deep thinking…

“During the space race back in the 1960’s, NASA was faced with a major problem. The astronaut needed a pen that would write in the vacuum of space. NASA went to work. At a cost of $1.5 million they developed the “Astronaut Pen”. Some of you may remember. It enjoyed minor success on the commercial market.

The Russians were faced with the same dilemma. They used a pencil. “

from here.