We’re all familiar with the worldwide adoption in text messaging, but in the past year we've seen a rush of new product/services that rely on person-to-person or machine-to-person interaction not through an app, but via text and voice. As designers we’re being forced to reconsider fundamental, desktop-induced assumptions about interaction models on mobile, which is already having a profound impact on developers, app stores, consumers, service providers, and retailers: How much can we expect machines to supplement human interaction? Are we sure that we want to interact with machines the same way we do with humans? When is it appropriate to replace a bot with a human, and vice versa?