Technology vendors like to talk about data being big, really big. Petabytes of storage; gigabits of bandwidth; megaflops of processing power.
But data doesn’t have to be big to be valuable. One of the most successful financial trades of all time was premised on a piece of information that could have been represented by a single bit (1 or 0).
On June 19 1815, the bond market in London wa...
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