Removing Beamer nav widgets

Here's a handy tip for all the people I see giving talks made with the super-genius LaTeX Beamer package, all of whose slides have a row of never-used navigation widgets (back, forward, start, end, next frame...) getting in the way of the slide content. It's dead easy to remove them, and then (if you're like me) you can finally sleep at night. Just put this in your Beamer document preamble:

```\mode<presentation> {        \setbeamertemplate{navigation symbols}{}      }
```

Voila --- no more silly nav crap! You will now be the envy of obsessive-compulsive, LaTeX fiend scientists everywhere you go!