Question: I don't like the feature that automatically detects faces in Photos for OS X because of the unnecessary CPU and disk space consumption. A photo library of 360 MB generated 50 MB of face detection data inside the Photos Library.

Is there any way to disable this feature in Photos for OS X?

Answer: 
Unfortunately, you can only side-step the issue by clicking the Albums tab > Faces, and select each found face & delete it. You cannot bulk select, so this must be done manually for each face.

You should log an enhancement request (or three) at the [Photos Feedback](http://www.apple.com/feedback/photos.html) page.
You can find the option in **View > Hide Face Names**.