Summary for those who don't RTFA
by davidwr (791652)

Successful projects: The internet, GPS, speech translation, stealth planes, gallium arsenide
Failed projects: Hafnium bombs, the mechanical elephant, telepathic spies, FutureMap futures market for terrorism, Orion nuclear-bomb-propelled spacecraft

Conspicuously missing:
Successful Projects: Slashdot
Failed Projects: CowboyNeal Dating Service