Business
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President warns China not to move forward with tariffs of its own, as countries face potential trade war -
Despite their potential, no one has managed to take them from flight of fancy to everyday reality
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IBM shows off Project Debater, artificial intelligence project designed to make coherent arguments as it processes vast data sets
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In depth
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The Canada debacle showed the global economic system is no longer anchored by cooperation -
The tech entrepreneur has endorsed a vision of monolithic totalitarianism overseen by machiavellian machines – and one that is neither entirely utopian or anarchist
Around the world
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Consumer watchdog took tech giant to court over complaints about repair and replacement -
Consumers used debit cards 13.2bn times in 2017, while the number of cash payments fell 15% -
Senate report says strikes and outdated ATC equipment cost airlines €300m a year -
Firm hopes to better conventional batteries to store renewably generated power
Featured topics
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Bullying or budgeting? Guardian readers weigh in on conflict over which spouse can control the purse-strings -
Letter calls for plan of action following dire United Nations report into extreme poverty -
Live Markets slide as Trump threatens China with $200bn of new tariffs - business live