Hi, they might have been testing new motors, better designed gyroscopes and/or accelerometers, new fuel mix, or a new warhead on this particular test. The real nature of the test will never be public knowledge. Moreover, one has to test these missiles to ensure their reliability, you can only simulate so much. Trust me I am a statistician that runs simulations for banks on a daily basis.
Moreover, think of your car sitting around in the garage for a couple of years, you will probably want to turn the engine on to make sure all systems function.... same idea here.
Moreover, think of your car sitting around in the garage for a couple of years, you will probably want to turn the engine on to make sure all systems function.... same idea here.