Exactly, the less external assets you load, the better. But you're not always in a position to be loading just your own assets. Sometimes you'll use 3rd party s

Exactly, the less external assets you load, the better. But you're not always in a position to be loading just your own assets. Sometimes you'll use 3rd party scripts and in that case as many of those need to still go at the bottom as possible. Take the Twitter @anywhere library for example. It's non essential to the user experience and shouldn't be at the top blocking the main page from loading (especially given its wildly variable loading times), so it should go at the bottom.