Dennis Geelen is a Lindsay-based management and business consultant who has just published a new book called The Zero In Formula: The Definitive Guide to Building a Disruptive and Sustainable Business through Customer-Centric Innovation. Billed as a guide for building a disruptive and sustainable business built for long-term success, the Zero-In Formula mirrors Geelens’ consulting business, both in name and approach. For details look for Dennis Geelen on Linkedin.