This is unnecessary, because it doesn't make the book any easier to carry around: the book weighs the same regardless. The schoolteacher comes along every so often and erases whole pages of notes. The big bookcase with reference books is like your phone's internal storage: you can't use it directly (because the books are printed, not written with pencil), so it's expensive (it takes time and energy) to copy data into your notebook (RAM) to work on.Ī task manager app is like a schoolteacher who thinks your notebook looks untidy with all those pages of notes you're not using any more. This is exactly what Android's doing with your RAM. Only if you're really desperate for space (maybe there's one big subject that takes the whole notebook) do you erase the information you're using today. If you haven't got any of that left, then you erase some information you use often but not right now. When you want to make space, first you erase the information you haven't used for a while. You keep track of what information in the notebook you're using right now, and what information you use often, and what information you haven't used for a while. So once you've copied some information, you want to keep it in your notebook for as long as you think you might need it. When you run out of space in the notebook, you use your eraser to wipe some information you don't need again, so you can copy more information into it.Īll this copying is tiresome. You can't carry the reference books around with you, so if you need to know about a subject, you have to copy the information out of a reference book into your little notebook. Imagine you have a notebook (as before), and a big bookcase with lots of reference books. The only difference it makes is changing what the app shows you next time you launch it: the screen you were on before, or the main/first screen of the app. Swiping an app out of the 'recent apps' list doesn't kill the app or remove it from RAM. Pressing the back button doesn't kill an app or remove it from RAM. The same way, with current RAM technology, the battery use of the RAM is fixed, regardless of what (if anything) is stored in it.įrom Android's point of view, it doesn't matter whether you leave an app with the home button or the back button. The book doesn't get any heavier, whatever you write in it. You can write data into the book (with a pencil), and you can erase those data and replace them with new data, but the book's always the same weight.
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