Thanks! Security and accountability is one aspect, but it's also about Big Data. And the data that is captured is reused to improve the very AI that we used to capture that data. So it's a feedback loop of constant improvement.



It's useful at every size of the network. Even if it were just one node whether it be ...

• for security
• plain curiosity about people's behaviour
• data science (what's this neighourhood's average height, walking gait, salary based on car, how many (visibly) pregnant women etc.)
• because it's interesting seeing people's lives from a bird's eye view and being able to rewind time
• multiple vantage points for a self-driving car
• an impartial, indifferent, semi-omniscient, non-human oracle for a smart contract
• or the fact you believe the crypto-currency will be worth something some day
• etc. etc.