Si Elliott: Happy Accidents, Behavioural Science and Keeping Business Human

Si Elliott has spent more than two decades in marketing leadership, and his conclusion is not what most of the industry wants to hear: businesses have become very good at reaching people, and increasingly poor at understanding them. As co-owner of Nottingham creative agency Diversity and founder of behavioural science consultancy Fabricx, Si has built his career at the intersection of human psychology and brand experience, watching the industry he loves chase metrics at the expense of the people those metrics are supposed to represent. His first book, Customer Experience Thinking, draws on 34 behavioural biases and 8 core customer experience principles to make the case that the future of leadership and marketing belongs to those who stop optimising for conversions and start designing for people. In this episode of Leadership Odysseys, Si traces the path that took him from an accidental start at a Nottingham agency to leading a management buyout, founding a consultancy, hosting his own podcast, and publishing a bestseller — all while watching his own daughters grow up in the digital world his industry helped build. Key Highlights 1. The management buyout — and the choice he didn't have to make When the founders of Diversity stepped back, Si already held equity. He could have kept it. Instead, he structured a management buyout specifically to put shares in the hands of the people working inside the business. He's direct about why: "I could have sat and gone, 'I've got it all for me,' but I wanted to share the opportunity out to other people." That decision, he says, became the flywheel for everything that followed — and it tells you more about his leadership than any title ever could. 2. The Kahneman lightbulb — discovering what had been happening beneath the surface all along It was Daniel Kahneman's *Thinking Fast and Slow* that cracked it open. Si describes the moment he understood that less than 5% of human decision-making happens in the conscious brain as a reckoning with his entire career: "All my career I've been playing to what I thought was everybody's 5% page, but there's so much happening beneath the surface." It didn't make the previous decades feel wasted. It made everything that came next feel urgent. 3. The robot surgeon — where AI ends and humanity begins Si doesn't frame AI as the villain. He frames it as a power tool, and argues the industry's mistake is treating the tool as the carpenter. His robot surgeon analogy is worth sitting with: if you're under general anaesthetic, a statistically accurate robot is fine. The moment you come round, anxious and disoriented, what you need is a person who can see that you're panicking and put a hand on your shoulder. That distinction — between the moment that doesn't require connection and the moment that demands it — is where he believes every business needs to draw its own line. 4. The effort heuristic — why his typo-filled LinkedIn posts outperform the polished ones Si uses his own feed to illustrate one of the behavioural biases at the heart of his book. A perfectly structured, three-point post signals AI. A post with his natural sentence structure and the odd typo signals a person who sat down and actually thought. People scroll past the first. They stop at the second. He puts it simply: sending a handwritten letter versus an email carries the same information, but a very different weight. In a world where AI removes the effort, effort itself becomes the differentiator. 5. The daughters, the book, and why it had to be written Si has two daughters, 11 and 14, growing up inside the world that his industry helped build. He was honest about what he saw: "Is this as good as the world I entered into? And in a lot of cases, I don't feel it is." The book wasn't a career play. It was a response to watching what metric-driven, digital-first marketing has done to genuine human connection — and a decision to do his part in pulling it back. For every copy sold, he plants a tree. Not because it scales. Because it has to live up to what the book is actually asking of people. Si's words of wisdom to close: the pursuit of getting the thing is what you will enjoy most — not the having of it. For someone who spent two decades building something real, shared equity he could have kept, wrote a book he wasn't sure he had the right to write, and planted trees for every copy sold, that's not a polished closing line. It's what the whole conversation was actually about. Si Elliott is proof that the most interesting paths are rarely the ones you planned — and that the willingness to stay curious, stay human, and share the upside with the people around you is what makes a career worth looking back on. Connect with Si Elliot: LinkedIn  Fabricx: LinkedIn | Website  This episode is brought to you by: Cell Wellness Co | Naturally Glutenfree Connect with Kirsty Ghahramani (Gee):  LinkedIn |  Instagram | Website