2012 January : Dragons in the Algorithm

Archives

Removing the “Macros” warning in PowerPoint

When you open any PowerPoint presentation made by my company’s default presentation format, you get a warning that it contains macros and asking whether the macros should be disabled. The macros are useless, but removing this is somewhat awkward and difficult to remember so I’m writing down the instructions. more…

Using a Mix of Computers and Humans for Security

Suppose that your bank offers currency conversion as a service: give them a deposit or make a withdrawal in euros and they’ll adjust your balance in dollars. They don’t do this out of the goodness of their hearts: today’s conversion rate is around 1.28 $ / €, so they’d give you 0.75 € for every $ and 1.25 $ for every € so they’d make a good 6.5% margin on the conversions. more…

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