In the worst-case scenario, the very concept of global climate policy would lose all value, with decades of climate alarmism giving way to fatalism. Given that the UN formally accepted the 2°C limit as the starting point for the top-down approach in 2010, the well-practiced strategy of obscuring current failures by announcing more ambitious future efforts would become unsustainable.
如果巴黎峰会失败（很有可能），由此造成的对自上而下办法的信心崩溃可能引起两种结果。在最坏情形中，全球气候政策这一概念将价值全无，几十年的气候警告将让位给宿命论。联合国已在2010年正式接受将2℃极限作为自上而下方法的出发点，通过宣布更有雄心壮志的未来计划掩盖当前失败这一屡试不爽的战略将不可持续。