LOL I wore glasses for bloody years (until I was 18 and my eyes calmed down enough to get contacts)...I've had them since I was 6 and can remember the first time I played on a keyboard on my granddad's lap when I was three.
I must be a T too!!!!
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Photos are moods and thoughts frozen in time ... who knows what function you were employing at the time of the shot, and therefore what body language you could convey. Plus your attitude towards the photographer could influence it as well, your environment etc.
I think this kind of typing is just a guessing game for the most part. Unless you get some psychic insight on the person ...