Merge "Add more explanation on difference between aggregate and discrete information." into sc-dev am: 3476ed1d am: 5f782738 am: 05bd8a67

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/14411200

Change-Id: I90a7e98c8d35c498178ea41329c734a4c1d4f450