How good is the level of general knowledge possessed by Alexa and other digital assistants? For the second time, U.S. digital agency Stone Temple analyzed the issue by making a selection of assistants answer 5,000 general questions. The best performance was recorded by Google Assistant on smartphones which had an answering share of 77.2 percent, of which just over 95 percent were correct. By comparison, Apple’s Siri answered 40 percent, of which 80 percent were correct. In comparison with the previous year, the learning curve for all assistants is on an upward trend.