So click a few times. Clearly most of the resulting codes consist mostly of 0's. If you send a binary message, and on its way to the recipient most of the 1's get changed to 0's, then your message will not be reliable. INFORMATION IS LOST.
||Let's suppose ALL the 1's got changed to 0's. Then your message would contain NO INFORMATION. That's because you're really left with a ONE SYMBOL alphabet. You need at least two to convey information.
If only a portion of the 1's get changed to 0's then you still have some information left. How much?