万物简史:PART II CH 5敲石头的人们（24）
He had really only one flaw and that was an inability to [-1-] the correct age of the Earth. [---2---] His first effort, in 1862 for an article in a popular magazine called Macmillan's, suggested that the Earth was 98 million years old, but cautiously allowed that the figure could be as low as 20 million years or as high as 400 million. With remarkable prudence he [-3-] that his calculations could be wrong if “[---4---]”—but it was clear that he thought that unlikely.
With the passage of time Kelvin would become more [-5-]in his assertions and less correct. He continually [-6-] his estimates downward, from a maximum of 400 million years, to 100 million years, to 50 million years, and finally, in 1897, to a mere 24 million years. Kelvin wasn't being [-7-]. [---8---]Therefore it followed that the Sun and its planets were relatively, but inescapably, youthful.