Winged-footed Mercury, messenger of the Gods, must have very little to do nowadays, as everyone in Europe seemed to be worshipping Jesus. If he could somehow be tracked down and put on retainer and put to work flitting back and forth from city to country and back, carrying information about who owed what to whom, and if one, furthermore, had rooms full of toiling Computers, or (engaging in a bit of Speculative Fiction here) a giant Arithmetickal Engine for balancing the accounts, then most transactions could be settled by moving a quill across a page, and movement of silver across England could be cut back to the minimum needed to settle the balance between city and country.