The biggest difference between Android and Chrome OS for me as a user is how it handles user multi-tasking.
I've tried using an Android tablet for work. It's nigh impossible, even with a keyboard because it doesn't support multi-tasking well. Sure, it supports OS multi-tasking, but it doesn't support user multi-tasking.
Android is based around the single-task model. You have a foreground app that takes up the entire screen and other apps are backgrounded. You can switch between apps fairly quickly, but you can only have one open at a time. There are some attempts to fix this, such as Samsung's split-screen, but none are officially supported. We've even moved to having Chrome tabs use this model.
I love my Chromebook for work though. It does everything I need to do, including having multiple document windows open for multi-tasking.
Chrome OS is built on a multi-task model. You can have many windows open at once and quickly switch between them without losing state or visibility.
Windows tried to merge the two with Windows 8 and it was a terrible user experience. The last thing I want for my dual 24" monitors is to be able to only use one window at a time. Having a messaging app take up the entire monitor is ridiculous. Hopefully they'll find a middle ground. Until user multi-tasking exists in Android I won't be using it for anything but my phone.
I advise against the use of the term "multitasking" to mean anything other than OS/unit of schedulable work multitasking, which is the proper meaning. The same happened to "real-time", and generally having technical terms with concrete meanings be watered down isn't preferable. Multiple workspaces is really what Android lacks.
Multitasking is used in multiple contexts now. Commercials and consumers use it to talk about Android and iOS features. It's too late to try and claim such a generally useful word like "multitasking" as a keyword.
Would be really interesting to see some serious productivity studies done on this. Not to pick on you -- I appreciate you insight -- but humans don't do multi-tasking well.
I wonder (and have no idea, just throwing the idea out there), if people would be more productive in that single tasking environment.
For me its not just about multitasking. Its about distraction. With one window per app on a big screen (eg Windows 8), its just too distracting to switch. I have to go to application switcher, choose appropriate window, and everything looks different now. However, if I've typical two windows side by side of even overlapping, the switch very less distracting...and of course quicker.
That said, I do use a tiling window manager on my 13" laptop for work. I mostly use full-screen mode, but it works well for me, because switching is very fast.
Human ‘tasks’ and computer ‘tasks’ are not the same thing. A productive ‘task’ for me, at work or at home, typically involves concurrently using one or more editors (text, graphic, schematic, …), one or more documentation readers (web browser, PDF viewer, …), and one or more communications tools (email, IRC, hangouts, …).
I've tried using an Android tablet for work. It's nigh impossible, even with a keyboard because it doesn't support multi-tasking well. Sure, it supports OS multi-tasking, but it doesn't support user multi-tasking.
Android is based around the single-task model. You have a foreground app that takes up the entire screen and other apps are backgrounded. You can switch between apps fairly quickly, but you can only have one open at a time. There are some attempts to fix this, such as Samsung's split-screen, but none are officially supported. We've even moved to having Chrome tabs use this model.
I love my Chromebook for work though. It does everything I need to do, including having multiple document windows open for multi-tasking.
Chrome OS is built on a multi-task model. You can have many windows open at once and quickly switch between them without losing state or visibility.
Windows tried to merge the two with Windows 8 and it was a terrible user experience. The last thing I want for my dual 24" monitors is to be able to only use one window at a time. Having a messaging app take up the entire monitor is ridiculous. Hopefully they'll find a middle ground. Until user multi-tasking exists in Android I won't be using it for anything but my phone.