The people who love voice messages love voice messages. Vox.com’s Kaitlyn Tiffany and The Verge’s Ashley Carman aren’t those people. On this week’s Why’d You Push That Button, they discuss voice messages and why people send them. They also try to figure out why people like them in the first place.

Ashley talks to her best friend, Casey, about her habit of sending voice messages, and Kaitlyn interviews The Verge’s very own AI reporter James Vincent and his mom, Bridget, about their family texting dynamics. It’s heartwarming. Then, Ashley and Kaitlyn take all that they’ve learned to Djamel Agaoua, the CEO of messaging app Viber, to learn more about why people use voice messages and how they’ve become more popular around the world. Agaoua posits a few theories on why they’ve bloomed in popularity and previews how voice messages will evolve in the future.

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