Okay, don't want to get into the weeds with all the controversial choices that iCloud Photo Library has created - just have one simple question. Has Apple provided any actual documentation as to how "Optimize storage on this device" works for iCloud Photo Library. The reason I ask is that I have a 16gb iPad - it currently has about 1.1gb of photo data on it according to the usage monitor. I have iCloud Photo Library turned on for this device and also for my iPhone 6. Because I can no longer "delete" photos on my iPad without deleting them from the iCloud and other devices how do I manage storage - or do I just trust the "optimized" versions to do this for me? For example, let's say it's a year from now and I've taken thousands of pictures - all good on my 64gb iPhone, but will the storage on my iPad get eaten up by this? Does it intelligently know how much space I have and readjust? Very confused here as previously if I needed to free up space I would just dump the photos to iPhoto and delete from the device...now I can basically never delete photos from the device since that would delete them everywhere else...so will I eventually run out of space or will it just migrate all of those photos "to the cloud" and not take up local storage?