Ask HN: How Many Pages in a Project?

I've been experimenting lately with building my web apps in a single page.

To show additional pages, modal forms or the URL determines what is shown on the page. For me, it keeps things even more organized and simple. I notice with the one-page method, I'm more likely to complete my projects when I start them and I release them faster too.

Actually, it's technically two pages: an index file which is the landing page, and then one more additional page to manage the rest of the website.

Has anyone else adopted this method?