Feedback is New Scientist's popular sideways look at the latest science and technology news. You can submit items you believe may amuse readers to Feedback by emailing feedback@newscientist.com Science is one of the most fruitful sources of new terminology. There's nothing like a surfeit of terms like "mitochondrial synthesis" and "quantum fluctuations" to make your writing sound authoritative Recently there has been a spate of scientific papers containing the phrase "vegetative electron microscopy/microscope". The term suggests a device for scanning broccoli, but it is utter nonsense. There are scanning electron microscopes and tunnelling electron microscopes, but not vegetative electron microscopes.

Facebook Inc. executives have long said that artificial intelligence would address the company's chronic problems keeping what it deems hate speech and excessive violence as well as underage users off its platforms. That future is farther away than those executives suggest, according to internal documents reviewed by The Wall Street Journal. Facebook's AI can't consistently identify first-person shooting videos, racist rants and even, in one notable episode that puzzled internal researchers for weeks, the difference between cockfighting and car crashes.