[Answered]  are the stars on the disks useful?

I noticed that the disks from hasbro (and I'm not sure about TT) has stars randomly placed on them. for example, a central with one star and another central with four stars. why is that?
To very slightly make them a little off balance. You'll notice that the stars are never symmetrically placed. But it really doesn't effect much at all
The Stars are merely there to differentiate if your opponent has the same Disk as you. You place the star stickers on the Stars of the Disk. So even if you have the same number of stars on the disk, your sticker pattern should be different.
It is where you put the star stickers (for the TT Discs) to differentiate between two players discs if they both use the same disc.