Who decides whether we get a mortgage, a job interview, or quick attention in the emergency room? It might be a machine: because algorithms, and the data they process, play an increasingly dominant role in our lives.

The problem: the models and datasets underpinning these algorithms are not neutral. They are social constructs, shaped by imperfect societies, and more often than not by male technologists with limited expertise in social sciences or the communities their work impacts.

In this episode of Welcome Change we hear from Ashoka Fellow Gemma Galdón, a leading voice in the field of tech and ethics, and learn about her work with businesses and governments to spot and correct biases in algorithms.

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What is Welcome Change? Meet the world's best social entrepreneurs and get an insider look at what works, and what's next. All topics, all geographies, every Wednesday.