How so? The scenario being modeled here is a user who wants to use an app but does not already have it. The status quo is that they must download a 150MB bundl

How so? The scenario being modeled here is a user who wants to use an app but does not already have it. The status quo is that they must download a 150MB bundle before being able to proceed. The proposed app slicing will allow them to download maybe 10-20MB before being able to proceed, with additional components (up to the 150MB total) downloaded on-demand. If the user is on an intermittent or slow connection this is still a significant improvement over the status quo: the user gets into the app much more quickly. Additionally, if the user only uses a small slice of the app's functionality (which is the 90% use case), additional downloading can be deferred until the user connects to wifi, at which point the rest of the app can be downloaded over a fast and reliable connection, all seamlessly without the user having to worry about it.