There is another company at the trade show also beginning to launch a similar XR product, MiXR, for use by chefs in restaurants. If you're able to get chefs trained on your ChefsKiss XR system, what single term best describes why a ChefsKiss adopter wouldn't later adopt the rival MiXR product if they need to invest time to learn how to use the other solution. 1) Positive feedback 2) Switching costs 3) Crossing the chasm 4) Critical mass 5) Timing