Even when using serverside javascript, you still end up with at least 4 languages; javascript, html, css and occasional sql queries. Rails is actually not that

Even when using serverside javascript, you still end up with at least 4 languages; javascript, html, css and occasional sql queries. Rails is actually not that bad, letting you use ruby for everything from javascript and html templates to sql queries and configuration. The future is languages that can be tweaked to express anything like lisp, ruby, python, groovy and one day also javascript.