Fast food companies have been experimenting with integrating artificial intelligence into their restaurants, from Flippy the burger-flipping robot at White Castle to dynamic pricing at Wendy's . One arena where AI seems to really be struggling, though, is at the drive-thru -- and Taco Bell is the latest to experience AI mishaps at the order box. After taking 2 million orders with AI, Taco Bell has reached one conclusion: we still need humans.

"We're learning a lot, I'm going to be honest with you," Dane Mathews, Taco Bell's chief digital and technology officer, told The Wall Street Journal in a story published Aug. 28. "I think like everybody, sometimes it lets me down, but sometimes it really surprises me."

The revelation comes after Taco Bell's new AI drive-thru ordering syst

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