Each country's national banking regulators carried out a test that simulated what would happen to a bank's finances during a recession where growth falls more than 4 percentage points below EU forecasts.

BBC: Eight banks fail EU stress test with 16 in danger zone

The challenge was devising a test that accurately simulated something relevant to the behavior being predicted.

NEWYORKER: Don��t!

In the new test driving conditions will be simulated, using film clips of real scenes, for example a child running across the road.

BBC: Learner drivers face new test

To test out this idea, Paek simulated the asteroid Apophis, which will pass nearby the Earth in 2029.

FORBES: An Earth-Killing Asteroid Could Be Deflected With Paintballs

In November, DARPA put street-level robots to the test in its Urban Challenge, a race of 12 autonomous cars through simulated city streets populated by obstacle cars.

FORBES: War Without Soldiers

To test whether aging reduces the ability of pedestrians to multitask, Neider and his colleagues created a simulated crosswalk using a self-powered treadmill, video screens depicting a busy street, and special goggles that create the illusion of virtual reality.

CNN: Multitasking and crosswalks a risky mix for elderly

Presumably, the USAF thinks that "the right thing" would involve pulling LightSquared's license, but for its part, the company says it believes Shelton is referring to a test conducted by Garmin (possibly explaining that recent outage in the Southeastern US?) using simulated interference filters -- not the actual filters that it has spent several million dollars developing and perfecting.

ENGADGET: US Air Force raises concerns over LightSquared's LTE network messing with GPS

What is more, Iran has test-launched ballistic missiles off of ships and flown another, the Shahab-3, that simulated a detonation at apogee.

CENTERFORSECURITYPOLICY: Center For Security Policy