Merge "Add more explanation on difference between aggregate and discrete...

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

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

Change-Id: Ifd3b96a37f293db8a4cfd3c88c6230d3e88fac0a