The benefits of diversification -- higher return and lower risk -- is a better reason to invest in gold, even if it was true that gold holds its value for millenia, which probably isn't true.
The article is about "why stocks beat gold and bonds" not "why you should own only stocks and never own any gold or bonds".
The article is about "why stocks beat gold and bonds" not "why you should own only stocks and never own any gold or bonds".