This is a featurette found on the DVD for The Matrix, as well as on one of the 10 discs in the Ultimate release. It consists of behind-the-scenes footage, test material, animatics and an interview. John Gaeta, the man behind the technology, explains... throughout this... and thus answers the question posed in the title. It's not bad, and the information is interesting, it's just perhaps not the most gripping way to tell it. The method is described, and we do get good insight into how it works and the way they do it, the photography and all. For being so short... six minutes... it does hold a fair amount. The editing is fine. Pacing is unimpressive. This breaks no new ground, and has nothing to offer anyone who doesn't specifically wish to find out more about this particular subject. This doesn't necessarily give anything in the film away(the first one, obviously, what with the year on this), and it doesn't hold anything objectionable, the strongest is images of bullets hitting, of which there is slim to nil in this. I recommend this to anyone who wants to know about Bullet-Time, and maybe fans of the franchise. 6/10