Random numbers from CPU execution time jitter

> You may be right but the thing about an entropy pool is that mixing in some new data can never make things worse.

Your assertion is wrong unless you qualify it more precisely.

Let's say you have some entropy pool and add /dev/null as a further source to it. Now, depending on the size of the pipe that sucks randomness out of that pool it might be that the pool is empty - except for /dev/null.

So if instead of blocking you now continue to feed the pipe from /dev/null, then randomness disappears into complete determinism.

So I think you have to explain how the output of your entropy pool is actually mixed before asserting that "it never can make things worse".