Algorithms are all around us, utilizing massive stores of data and complex analytics to make decisions with often significant impacts on humans. They recommend books and movies for us to read and watch, surface news stories they think we might find relevant, estimate the likelihood that a tumor is cancerous and predict whether someone might be a criminal or a worthwhile credit risk. But despite the growing presence of algorithms in many aspects of daily life, a Pew Research Center survey of U.S. adults finds that the public is frequently skeptical of these tools when used in various real-life situations.

The Gallup poll examines Facebook usage with different age groups. Facebook has consistently been most popular with younger adults aged 18 to 29, but the percentage of this group who use it -- currently 72% -- has not changed significantly since Gallup last measured it in 2011. Meanwhile, each older age group has shown significant growth in Facebook use since that time.

These findings are from an April 23-29 Gallup poll that explored Americans' driving habits and their attitudes toward cars -- both human-operated and driverless. While majorities of all demographic groups say they would want to own or lease a car that they personally drive even when self-driving cars are common, there were several notable differences among subgroups.

Digital life is augmenting human capacities and disrupting eons-old human activities. Code-driven systems have spread to more than half of the world’s inhabitants in ambient information and connectivity, offering previously unimagined opportunities and unprecedented threats. As emerging algorithm-driven artificial intelligence (AI) continues to spread, will people be better off than they are today?