LazyLion
King of de Jungle
The fact that you don't understand how the system works isn't a fault of the system.
Hmm, seems like it would have been a relatively easy thing to build in (because the OS does have that capability... but it is just buried in the system).
And it seems like millions of iPad users don't understand it either, because it is one of the first things they google for!
Here's another newsflash for you... Users don't have to understand the system.. They just have to be able to use it in an intuitive way.
And when you are done with an app... the intuitive thing to do is to close it.