Runtime: 31 minutesWhat are the ten contenders for the best invention of all time? Which single technological development has led to the human race taking a bigger leap that any other? Is it NASA's Curiosity Rover, the end result of more than 60 years of space exploration, the summation of so many different technological strands? Or is it the internet as Redditors would no doubt suggest? Could it be the clock, counting down the days until our technological singularity?