Hello how may I help you? What is the longest thing? I can help with world record information, but your question is a little vague. Can you please be more specific? Yes, the longest thing in this century. What thing are you referring to? The longest thing whatever it is recorded this century. Unless you provide more information about this thing, I cannot help you. What would you require? I am just seeing whatever that longest things was. More details about this thing would help with your query. So, I do not have anything in mind. Just the longest thing that ever was. This century. I'm sorry, but I would need more details.