If twenty components work 99% of the time, then they only have an 0.99^20 = 82% chance of working as a collective.
If your 5.1 GHz (billion instructions per second) CPU had a 0.00000001% chance of failing at a given instruction, you'd have a 40% chance of a crash every second.
If a flight had a 1% chance of killing everyone aboard 10 million people/day * 1% = 100,000 people would die every day from a plane.
If your 5.1 GHz (billion instructions per second) CPU had a 0.00000001% chance of failing at a given instruction, you'd have a 40% chance of a crash every second.
If a flight had a 1% chance of killing everyone aboard 10 million people/day * 1% = 100,000 people would die every day from a plane.