They move their heads with a specific purpose, to alert who is observing the photography that the element that the photograph is pointing is a specific target that shall be pressed by the pointing device that is handled by the observer of the photography, and probably they are awared with the medal of "who knows to take a profile picture", in matter of fact "they are rewarded with a prize, that is not of abstract nature" and they have knowledge on acquisition photographic material of high quality, but definitively "they do not belongs to the Einstein subsets, such one are who are developing actually new forms of computers to execute binary operations that on case that just in case be visualized by humans will require a render device called a device that performs transformations of binary operations into emissions of photons that are grouped into small rectangles defined as pixels" and also such photos not dead lifts, it is the task of a human been and a "correct equipment to execute the task", since after all, a dead human been cannot perform the task.
