Kate complains about people taking selfies in front of the famous artwork rather than enjoying it. "Teenage girls were the worst offenders. Posing was second nature for these kids, selfie smiles rehearsed in mirrors, poses perfected after thousands of variations in body angle and head tilt, hair fluff and lip purse and peace sign, a permanent regimen of fine-tuning, akin to practicing piano or laying down a sacrifice bunt, skills never attempted by these kids, who instead know how to do mainly this one thing: look like they're having a great time in social-media photos…" Do you think this is a fair assessment of today's teenagers? Why or why not?