In his 1973 film Westworld, Michael Crichton imagined an amusement park where normal people interacted with incredibly lifelike robots for entertainment—until the robots turned on them.
One convention of the script was that the only way you could tell the humans from the robots was to look at the hands. Apparently, the company that made the robots couldn't do hands convincingly.
With AI photographs flooding the internet, one of the best ways to tell if a photograph is AI or real is to look at the hands. Apparently AI can't do hands right either.