Telling lies and faking emotions is quite common in human-human interactions: though there are risks, in many situations such behaviours provide social benefits. In recent years, there have been many social robots and chatbots that fake emotions or behave deceptively with their users. In this paper, I present a few examples of such robots and chatbots, and analyze their ethical aspects. Three scenarios are presented where some kind of lying or deceptive behaviour might be justified. Then five approaches to deceptive behaviours - no deception, blatant deception, tactful deception, nudging, and self deception - are discussed and their implications are analyzed. I conclude by arguing that we need to develop localized and culture-specific solutions to incorporating deception in social robots and chatbots.

翻译：在人际互动中，说谎和情感伪装相当常见：尽管存在风险，但在许多情境下这类行为能带来社交益处。近年来，出现了许多情感伪装或对用户实施欺骗行为的社交机器人和聊天机器人。本文列举了此类机器人与聊天机器人的若干案例，并分析其伦理层面。文中提出了三种可能具有正当性的说谎或欺骗行为场景，进而讨论了对欺骗行为的五种处理方式——零欺骗、明目张胆的欺骗、得体欺骗、助推与自我欺骗——并解析了其含义。最后，本文论证指出，我们需要针对社交机器人与聊天机器人中的欺骗行为，开发基于本地化和文化特色的解决方案。