Warning: Major spoilers ahead forDoctor Whoseason 15, episode 1, “The Robot Revolution.

However, it’s reasonable to assume that Fifteen has been traveling alone since.

Belinda quickly catches on to the Doctor’s ruse and speaks back in the same way.

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When Belinda says, “What?”

As such, he has to shorten his sentence by one word after Belinda’s query.

Similarly,Belinda’s “Okay” means the Doctor must shorten his next line by one word.

Special Agent Sylvia Washington (Jenna Elfman) looking disappointed at Joe Leaphorn in Dark Winds season 3, episode 8

The Robots and people lived together in peace.

But then ten years ago, it all changed.

Because on that day, the Robot Revolution arose.”

The-Handmaid’s-Tale-Surely-Just-Ended-June-&-Nick’s-Romance-&-Hopes-For-A-Happy-Ending

BELINDA: “What?”

THE DOCTOR: “Thank you for listening attentively to my story.”

BELINDA “Okay.”

Custom Doctor Who image of Varada Sethu as Belinda Chandra and Ncuti Gatwa as the Fifteenth Doctor

Custom Image by Daniel Bibby

THE DOCTOR: “The AI generator evolved and achieved perfection.

It told its soldiers to conquer all life.

No one knows why.

A Robot in Doctor Who

It remains a mystery.

So the mighty robots marched across the world.

People fought back, but they are weak flesh.

Jonny Green as the AI Generator in Doctor Who

They begged for kindness and hoped for peace.

But then the AI generator conquered them.”

BELINDA: “Thank you very much.

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Very, very much.”

THE DOCTOR: “I am very grateful for your infinite wisdom.

With the people subjected, the generator looked out.

Headshot Of Ncuti Gatwa In The US premiere of the new season of the Disney+ series Doctor Who

It sought out the original Miss Belinda Chandra.

And so it looked to the planet Earth.

It beheld the creator and brought you here.

Headshot Of Millie Gibson In The US Premiere Of The New Season Of The Disney+ Series Doctor Who

It knew metal and flesh must finally unite.”

BELINDA: This is a fact, and then another fact.

Cannot hear every ninth word."

BELINDA: “Gotcha.”

THE DOCTOR: “Good.

Rebels fight back very soon.”

BELINDA: “So, when?”

THE DOCTOR: “Now!”

Both characters are economical with their sentences, as they can’t exceed eight words between them.

Otherwise, the Robots will be able to hear something that may alert them to the rebels' plan.