Where they are clear, the summit’s commitments do not add much to existing targets; mostly, though, they are woefully short on detail. We pick through the pledges. Germany is facing up to a colonial-era atrocity in modern-day Namibia, but a hard-won reparations deal will not quell controversy. And how Persian-music artists are upending the audio-streaming model. For full access to print, digital and audio editions of The Economist, subscribe here www.economist.com/intelligenceoffer