it A I as in Artificial Intelligence; VI is a virtual inteligence which is what the war spiders are, their systems not advanced enough to become self aware because they were built by his father and are basically outdated tech, but still good enough to kick ass. Another abreviation I use from time to time is VR, that's the Virtual Worls, or the simulated reality they hang out in, train in, and go to if they have to spend an extended time in the med pod, like Amy did in BITG.