Sometimes yes, provided it's not a posed photo. But then even posed photos often fail to hide subtler clues. The science and art of kinesics (body language, expressions and looks) include things like glances, face tilts, false versus true smiles, lip - eye discordance and certain other things like subconscious postures that often provide good clues, but for a more accurate reading some form of interaction with the person / observing how they interact with others is essential. It is not foolproof but still possible. As for algorithms we aren't yet at that development level of AI but someday it may well be possible.

It is face, not butt. So why outrageous?

As about the guy, no, I think such an algorythm wouldn't change the world to better.

P.S. thinking more about this, nothing outrageous about butts either. We just don't look at them often enough.

I would say 50% Yes. In some cases, what you see is what you get, however some people aren't what they seem

I think it is possible to find out some traits of character and possible behaviour according to the face, but it is not accurate of course, just some hints,some things about which it is needed to think. Conversation is needed anyway, gestures, nonverbal things will tell even more than words.

Isn't this called Physiognomy?

<a href="https://en.wikipedia.org/wiki/Physiognomy" rel="noopener noreferrer" target="_blank">https://en.wikipedia.org/wiki/Physiognomy</a>;

The Chinese version of Physiognomy can tell someone's future too.

<a href="https://en.wikipedia.org/wiki/Chinese_fortune_telling#Methods" rel="noopener noreferrer" target="_blank">https://en.wikipedia.org/wiki/Chinese_fortune_telling#Methods</a>;