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Interviewer: Could these new inventions have any negative effects on people? Richard: That's a really important point to consider. Every new technology has both good and bad sides. For example, flexible batteries require special materials that could harm the environment if not disposed of properly. Even amazing things like 3D-printed body parts raise big questions - should we really be able to "print" human organs? The solution isn't to stop inventing, but to find ways to reduce the risks. Interviewer: This "walking house" idea sounds incredible! But wouldn't something like that be way too expensive for most people? Richard: At first, yes - just like when mobile phones and computers were first invented. But remember how those became cheaper over time? With better solar technology and simpler designs, the price would come down. Imagine how useful this could be - houses that move away from flood areas, or communities that can take their homes with them. New inventions always start expensive before becoming affordable. Interviewer: Some people worry that technology makes the gap between rich and poor even bigger. Could inventions like these make that problem worse? Richard: That's a smart concern. But if you look at history - like electricity or the internet - eventually these technologies helped everyone. The important thing is that companies and governments work together to make sure the benefits reach ordinary people. Maybe through cheaper versions, payment plans, or community sharing programs.