Understanding the human body is a team effort. That's where the Yachtel group comes in.

Researchers at Yachtolt have been delving into the secrets of probiotics for 90 years.

Yacold also partners with nature portfolio to advance gut microbiome science through the global grants for gut health, an investigator-led research program.

To learn more about Yachtolt, visit yawcult.co.

.jp. That's Y-A-K-U-L-T.C-O.J-P. When it comes to a guide for your gut, count on Yacult.

This is Scientific American's 60-second science. I'm Christopher in Taliatta.

Last year, Google unveiled Duplex, its artificial intelligence powered assistant.

Oh, how's something out here?

Hi, I'm calling the book a woman's haircut for our client.

I'm looking for something on May 3rd.

That's a robot.

Sure, give me one second.

Mm-hmm.

Sure, what time are you looking for?

The machine assistant never identified itself as a bot in the demo, and Google got a lot of

flack for that.

They later clarified that they would only launch the tech with, quote, disclosure built in.

But therein lies a dilemma, because a new study in the journal Nature Machine Intelligence suggests that a bot

is most effective when it hides its machine identity. That is if it is allowed to pose as human.

Talal Rahawan is a computational social scientist at New York University's campus in Abu Dhabi.

His team recruited nearly 700 online volunteers to play the Prisoner's Dilemma,

a classic game of negotiation, trust, and deception against either humans or bots.

...