Although I'm used to be screwed by people, I still cannot get over what's happen today. Knowing that he said that to everyone, e.g. "considering changing topic", "I'm a bit worried for you." ... etc... I can't help but taking those as he actually meant. He would possibly think that by doing these, it might make people worker harder. But what would happen if I really take him seriously? Should I change topic?

At this point in time, I'm still trying my best to give a good presentation, with my limited knowledge on the topic. What still motivated me has always been my motivation (although this motivation may not be a motivation, any time). I've been thinking, "why am I here?". That would at least makes me work for about an hour.