**NOTE: NEW VENUE!** We're delighted to announce the final **ProductTank Oxford** in-person meetup of 2026 at a **new venue**! After a standing room only event in September, we're moving to a larger space at the **St. Aldates Tavern** in central Oxford. This month, we're joined by two of the leading lights of the UK Product leadership community, for an amazing talk, and a hands-on workshop. 6:00pm Doors open, drinks, and networking 6:50pm Welcome 7:00pm **Dave Wascha** \- Dividing by Zero 7:45pm Break 8:00pm **Faith Forster** \- Make Context Explicit 8:45pm Wrap-up 8:50pm Close (but you're welcome to stick around!) We hope you can join us! **Dividing By Zero** \- Dave Wascha In 628 AD, a mathematician named Brahmagupta defined zero. It took the world five hundred years to accept it — because zero didn't just add a new number to the system. It broke every equation the system was built on. Every framework product teams use to make decisions has the cost of building software in the denominator. That cost just went to zero, and the frameworks are returning an error. Every talk on this subject arrives at the same comforting answer: what's left for humans is judgment and taste. Dividing by Zero starts where that answer ends. Because the interesting thing isn't what got divided out of your job. It's what got multiplied into it — and what it means when the loops we work in start running fast enough to rewrite themselves. The machines are doing more of the tasks. The human work is moving upstream: deciding what gets optimised, what stays fixed, and what the system is allowed to change. This is a talk about economics, not ideology — including a problem no machine has solved, and the one time it was solved anyway. The thinking you'll need was written before most of us were born. It was waiting for the tempo to catch up. If you've felt disoriented by how fast things are moving, this talk will explain why — and send you home with something to make on Monday. **Dave Wascha** has

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