So what is the intersection of value and utility? Roomba meets the criteria, but nothing else? What about https://www.kickstarter.com/projects/tombot/tombot-af

So what is the intersection of value and utility? Roomba meets the criteria, but nothing else? What about https://www.kickstarter.com/projects/tombot/tombot-affordable-robotic-companion-animals-for-se/ https://www.kickstarter.com/projects/tombot/tombot-affordabl... ? Or is that too light on the 'sensing' part to be considered a robot? Is a Furby a robot? The problem seems to be one of semantics.