Zillow has been using algorithms to evaluate, buy, then resell houses — until recently. The company announced that it would pause purchases for the rest of the year, citing a lack of workers for renovations. The decision comes at a time when the real estate market is cooling off and may hint at the future actions of other “ibuyers.” Also on today’s show: China’s economic growth weakens, an honest conversation about mental health with a macro-social worker and a breezy trip to the world’s largest offshore wind farm.