I'm curious as to why not instead measure average battery consumption by each user to get a mean, and range which would allow a "range" of time to be shown (at

I'm curious as to why not instead measure average battery consumption by each user to get a mean, and range which would allow a "range" of time to be shown (at the start this would be a much wider range of course). The user could then adapt to this range because they know the usage the best. Considering the dynamics of the computer and how we use them a range would be much more suited to fulfill this type of feedback from the system.