I was thinking about this the other day. When I place a blu-ray disc into my PS3, about halfway through it "sucks/draws" it in automatically (like when you put a CD into the disc changer in your car). What exactly is the "force" that pulls it in? Is it some sort of mechanical tool, and can it damage your discs? Also, I have always been confused as to exactly HOW discs spin inside the drives. I know some drives, you "lock" the disc in (the small, round thing in the middle that locks the disc in also spins it). However, in others, a tray ejects and you place the disc onto the tray. Well, the disc goes in, and you cannot see what happens to it from that point on ... How do discs spin in those kinds of drives? And how are they "locked in?" I mean, don't they have to be "locked" in order to spin without wobbling? But if you simply place it onto a tray, how can the drive "lock" the disc in and spin it automatically? I just wish I could see it happening inside the drive for myself ... I'm always afraid my blu-ray discs will get damaged somehow (not scratches, but CRACKS) inside the PS3, because I always leave them inside the console after I finish playing (I usually spend 2-3 weeks on a game, so it would not be practical to eject the game every day). Once you "send" the disc into the PS3, there's no telling what is happening to it on the inside. Thanks!