I'd like to be clear right now what this article is about. It's about Apple's choice to get frameworks such as Core Image and OpenGL to direct which graphics card the Mac should use, and how by doing this, there have been some unusual cases whereby some applications cause the dedicated graphics card to be enabled, and continue to be enabled. This leads to a detrimental effect on battery life which is the exact opposite for putting this in place. With this in mind... read on.