And dukkha basically means that you understand that everything in life is basically craving and suffering. That at the root of everything, we're all suffering because we want. Buddha said that the key to a happy life was wanting what you had and not wanting what you didn't have. So that's the first noble truth, is understanding dukkha. And then the second one is understanding where that originates from. That's samudriya. And what that means is that you understand that suffering comes from you wanting stuff.