> mapping out "given this scenario, x, y and z happen".

I've used scenario tables in some contracts. Each row is a scenario. For each scenario, there are columns for Plan A, Plan B, and Plan C. (Some column entries for a given scenario might be blank.)

There are a couple of made-up examples in a blog posting I did a few years back -- scroll down to "Situation tables" at http://www.ontechnologylaw.com/contract-simplification/.

Having a contract validation test would be a worthy exercise for the party who didn't write the contract.

This sounds like a great service opportunity for startup/employee contract lawyers... if contracts are like code, then a parser (or maybe legal code pretty-printer) could easily allow a skilled professional to sift through code. Even easier if the contract is standard for a large company.

Any lawyers here care to pick my idea apart?

My firm is working on this, together with other like-minded law firms. Indeed, we are lawyers who write code (gasp!).