first started sending up astronauts, they quickly discovered that ballpoint pens
would not work in zero gravity
. To combat the problem, NASA scientists spent a decade and $12 billion to develop a pen that writes in zero gravity, upside down, underwater, on almost any surface including glass and at temperatures ranging from below freezing to 300 C.
used a pencil
and a physicist
were asked the following question: Suppose you walked by a burning house and saw a hydrant
and a hose
not connected to the hydrant. What would you do?
P: I would attach the hose to the hydrant, turn on the water
, and put out the fire
M: I would attach the hose to the hydrant, turn on the water, and put out the fire.
Then they were asked this question: Suppose you walked by a house and saw a hose connected to a hydrant. What would you do?
P: I would keep walking, as there is no problem to solve.
M: I would disconnect the hose from the hydrant and set the house on fire, reducing the problem to a previously solved form.