Developing without MVC?

[eluser]TheFuzzy0ne[/eluser]
Essentially, all you need are the libraries. You'd need to create a loader for loading them, and ensure that any dependencies are met. This can include helpers (show_error()), and some functionality from the base core files, which you will need for some libraries. CodeIgniter has been built with MVC in mind, using it for something other than MVC would be like using a salmon for a baseball bat, it's just not how it's intended to be used.