I don&#x27;t like web Java, but this is terrible for old websites. A few years ago I used the web archive to dig up a ton of old projects on genetic algorithms and fractals, which were really popular in the late 90&#x27;s and early 2000&#x27;s. A lot of these pages used Java apps to run simulations in the browser. Since at the time it was the most practical choice.<p>A few months later, I saw an HN comment that was super relevant to one of these old projects. I dug it up and linked it. However it no longer ran! It just gave a warning about not having the right security certificates or something. Which of course the developer can&#x27;t fix, since it&#x27;s long been abandoned.<p>Another example is the Intuitive Explanation of Bayes Theorem web page: <a href="http:&#x2F;&#x2F;www.yudkowsky.net&#x2F;rational&#x2F;bayes" rel="nofollow">http:&#x2F;&#x2F;www.yudkowsky.net&#x2F;rational&#x2F;bayes</a><p>This web page used some fantastic java applets to explain Bayes Theorem. A lot of people learned Bayes Theorem through this web page, and it was fairly popular at one time. But none of the applets work anymore. They used to just show a grey box in chrome, and now it&#x27;s just a static image. All of the functionality could be redone in javascript, maybe. But the author has long since moved on and doesn&#x27;t have js skill anyway.