Current technology is so inefficient that – to take just one example – if we were serious about wind power, we would have to blanket most countries with wind turbines to generate enough energy for everybody, and we would still have the massive problem of storage: we don’t know what to do when the wind doesn’t blow.
当今技术史是如此的效率低下，仅仅举一个例子，如果我们希望利用风能，那么我们将在大多数国家装满风机来生产满足所有人的能源需求，而我们仍需担心一个大问题，那就是如何储存这些风能：万一没风的话，我们更是束手无策了。