Developing a Large-Scale Application in CI

[eluser]oddman[/eluser]
[quote author="rogierb" date="1240410710"]2: that is the basic idea behind models: getting data. No.
4: You are talking about basic ajax caal, which will in 90% of the time go to a controller anyway, so, yes it is possible. We even go from controller to library, back to controller to another library, back to conroller and then parse the data back through the calling view.[/quote]

Okay, I mustn't be explaining myself very well because the answers I'm getting aren't really answering my questions.

for 2, I'm talking about having a library outside of CI utilising the models I specify within CI. Is this possible or not, and if so - any links/references as to how I'd do this?