As ever, what kept a woman pure was the drudge's life, of which Juvenal supplied the traditional formula: "Hard work, short sleep, hands chafed and hardened" from housework.

WSJ: Still Under Cleopatra's Spell

Very hard for people to stick with a formula that is telling you to buy out-of-favor stocks that were spit out by a computer, you know, nonetheless, and to stick with that when it's not working.

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Hard-line opponents of hunting accept that such a formula, combined with a ban on hare coursing and stag hunting, may be acceptable to many Labour MPs who have so far voted consistently for an outright ban.

BBC: Consultation on future of hunting

This insight runs counter to a commonly understood formula in which success is created from equal portions of hard work, God-given talent and luck.

FORBES: Organizational Culture: The Hidden Path To Success

It all might be able to change up a familiar formula, though the core gameplay of CoD is still kicking hard.

FORBES: X-Ray Rifles and Drone Armies in Call of Duty: Black Ops 2

Peter Hain, the shadow Welsh Secretary, was "suspicious ... at a time when their savage cuts are hitting Wales so hard, we are sceptical about the impact any tinkering in the funding formula will have".

BBC: First step taken the Silk route in Wales

From "Die Hard Trilogy" to "Batman Forever" to the many games based on "Star Wars, " the formula might seem like a no-brainer -- if a movie earns millions at the box office, why not extend the marketing plan from action figures and posters to something interactive, like a video game?

CNN: Lights, Camera, Interaction!