Andersen Consulting (Accenture today). It took them one decade and $12 million. They developed a pen that worked at zero gravity, upside down, underwater, in practically any surface including crystal and in a temperature range from below freezing to over 300 degrees C.
And what did Russians do.......................................??
The Russians used a Pencil !!!
So, learn to focus on solutions not on problems. "If you look at what you do not have in life, you don't have anything." "If you look at what you have in life, you have everything." Yet someone said "Focus on problem leads to inventions! and Focus on solution leads to discoveries."