some 废东西 to update the date..or else it will always be labour day

NASA:
When NASA began the launch of astronauts into space, they found out that pens wouldn't work at zero gravity (ink won't flow down to thewriting surface). In order to solve this problem, it took them >>one>> >decade and $12 million. They developed a pen that worked at zero gravity, upside down, underwater, on practically any surface including crystal and in a temperature range from below freezing to over 300 degrees C.

And what did the Russians do?

The Russians used a Pencil!

SOAP FACTORY:
A Japanese cosmetics company received a complaint that a consumer had bought a soap box that was empty. Immediately, the authorities isolated the problem to the assembly line, which transported all the packaged boxes of soap to the delivery department. For some reason,one soap box went through the assembly line empty. Management asked its engineers to solve the problem. Post-haste, the engineers worked hard to devise an X-ray machine with high-resolution monitors manned by two people to watch all the soap boxes that passed through the line to make sure they were not empty. No doubt, they worked hard and they worked fast, but they spent a whopping amount to do so. However when a rank-and-file employee in a small company was posed with the same problem, he did not get into complications of X-rays, etc, but instead came out with another solution. He bought a strong industrial electric fan and pointed it at the assembly line. He switched the fan on, and as the soap boxes passed the fan, it simply blew the empty boxes out of the line.

Moral:
Always look for simple solutions. Devise the simplest possible solution that solves the problem. Learn to focus on solutions, not on problems. Common sense is not so common after all!