Hi, I watched the recording from today where you went through the take home test and wanted to ask about two question. The use case diagram (q3) and the two non-functional requirements (q5). Q3. In the lecture you mentioned that HatsOff is an actor. Creating UML diagrams can be subjective and in this case I don't fully agree with HatsOff being an actor depending on how the system is defined. From what I understood of the case study, the chatbot requires HatsOff to function, so in this sense the system can be considered to be made up of the chatbot+hatsoff. Also from what I've searched, API's can be considered part of the system and in this case a HatsOff API was being used. Not sure about others, but I specified the system was made up of the chatbot and hatsoff but was deducted marks. Q5. I, probably like many others said Security and Privacy for this question. I understand your reasoning for saying Backup as a non-functional requirement and I agree it would be relevant for the system, however, for this question I don't believe it is more important than privacy or security, or at least not important enough to deduct any marks if it wasn't stated. The question states that the data will be sold off to identify people. A backup can prevent loss of data, but it can't prevent 'selling the data and identifying people' which is the main point of the question. Not being able to sell or access unauthorised data = security. Not identifying people = privacy. Thanks