Examining how real proteins are modeled can help novices to intuitively learn how the various 3D protein structures are naturally positioned and arranged in the real world. Many scientists offer their research free of charge on the Internet for anyone to download and study, and the tools to view and examine proteins are also often free. Some of the example objects are ridiculously huge in the tens of thousands of atoms, and so are not offered as a complete structural download since a supercomputer would be needed to model it fully, and not everyone can afford that.