Are there models of ZFC in which $\mathfrak{r}$ is strictly less than $\mathfrak{s}$? I've not been able to find any forcings that end up with this result.
Here $\mathfrak{r}$ is the reaping number $\lvert\lvert([\omega]^\omega,[\omega]^\omega,\text{does not split})\rvert\rvert$ and $\mathfrak{s}$ is the splitting number, its dual.