One.

So I've been having trouble with my HDD latey, and I downloaded this tool from the OEM, Western Digital.

It's got a "write-zeros" function, which erases the disk, turning ones into zeros and zeros into zeros. Very intriguing.

Ones, it seems, are what make a hard drive, and a computer, unique. If everything was one way or the other, it'd be using the same computer over and over.

But it's the combination of billions and trillions of ones and zeros that make hard drives unique.

And they make users unique.