The harmonic series diverges — $\sum_{n=1}^{\infty} \frac{1}{n} = \infty$ — which means it just keeps going, adding terms that get smaller and smaller but never actually stop mattering. The Nothing from Die unendliche Geschichte works the same way: not a destroyer but an accumulator of absence, term by term, until there’s nothing left to sum. The DC Reflecting Pool is currently doing something similar but with algae.