Think about how you'd search a large room for a lost key. You wouldn't examine every square inch sequentially. You'd split the room into sections (by the couch, near the door, under the table) and rule out entire sections at a glance. "I didn't go near the kitchen, so skip that."
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Last year, Tesco cut about 400 jobs across its bakeries, mobile phone shops and head office as part of plans to "simplify" the business.
What is AI and how does it work?