答案:the user-interface designer
例句:The solution is for the user-interface designer to completely abandon the idea that the user can make a mistake—meaning that everything the user does is something he or she considers to be valid and reasonable.
对于用户界面设计师来说,解决方法是完全放弃用户会犯错误的想法——意味着用户所做的一切,在他看来都是合法而合理的。