Marissa Mayer reveals why she's betting the future of personal AI on your photos instead of your emails: "Email naturally tends towards work and tasks. Where photos show you, this is your favorite color over time. This is a hobby that you've enjoyed. These are places that you like to go." "Neal Khosla just posted and said he had ordered flowers through an AI personal assistant, and it actually told his fiancée it was ordered through AI. I was like, 'Actually, go ahead and use Dazzle to order…