What do Donald Trump’s tariffs, a KFC egg tart, and a Coke-can radio have in common? They all show why people stay engaged when effort meets reward in just the right balance. In this episode, we unpack the psychology of flow — from Skinner’s reinforcements to Csikszentmihalyi’s sweet spot — and explain why making loyalty programmes “too easy” can actually kill participation. Expect insights, laughter, and maybe a little unexpected economics along the way. [Disclosure: Voices and Script AI driven].