Medical X-Press – Joanna Roberts 
In 2003, an influential study showed that children from rich families were exposed to around 30 million more words before the age of three than children from poor families—a difference that put children from lower-income families at an educational disadvantage even before they’d started school. But being bombarded by a large volume of words does not necessarily lead to rich and natural language use. Let’s take speech recognition software as an example. Scientists have been working on creating machines that can learn language through exposure to enormous datasets, but Siri and Google Assistant are still no match for a toddler. (more)