New Learner - boggling at face recognition!

Hello, I’m taking Coursera “AI for Everyone” and really enjoying it so far. My brain just screeched to a halt at the description of face recognition consisting of pixel by pixel brightness/color values…as someone with rosacea, my color varies by the day. And then, what about makeup!!!

Do any of you have recommendations for reading/watching for better understanding?

These sorts of variation are why face recognition isn’t entirely reliable.

Face recognition has a very long development history. You might get a useful summary here: