https://blog.wongcw.com/2021/11/19/%e8%8f%af%e7%b4%8d%e5%a4%a7%e4%ba%82%e9%ac%a5%e9%81%8a%e6%88%b2%e3%80%8amultiversus%e3%80%8b%e6%ad%a3%e5%bc%8f%e5%85%ac%e4%bd%88-%e8%9d%99%e8%9d%a0%e4%bf%a0%e5%a4%a7%e6%88%b0%e5%85%94%e5%85%ab/