Designers and architects need to adopt a "possibilist mindset" to amplify their influence and make the meaningful changes needed in the face of climate change, argue Michael Pawlyn and Sarah Ichioka in their new book ' Flourish: Design Paradigms for Our Planetary Emergency'. To meet the challenges of our time, we need to transform our ideas of agency – our capacity to bring about change. Rather than seeing the future as something that happens to us, we need to decide on the future we want and then set about creating it.