zhouhaochen: you are way off base. Freuding 'psychology' has no basis in emprical science and has been throughly discreditied by mainstream pyschology.
Sure, you study it a little in psychology 101 or similar to give you a grounding in the historical context of the evoloution of psychology but it's old hat. Stick to speaking on topics which you have authority, no offering widely <inaccurate> opinions.