When we see that the weather is just weather, and that outside of 'whether' we like it or not it is empty of any intrinsically existing quality, we start to see beyond our attachments to it, realizing that it is changing all the time. When you start to let go of attachments to passing phenomena, you start to cut away at the causes of suffering, which is clinging and so forth. Really, there is no speculation. You can try this out all the time. I don't understand why people insist that this is speculative.