We make decisions based on assumptions all the time. Some of the time this makes sense (e.g. survival skills). However, I have been talking to people from various walks of life, and issues that come up often come down to assumptions that are made.
As a white male, I am fortunate in may ways, in our current culture. Although even being a white male has its own baggage.
After thinking about the assumptions I make, it has been really interesting to try to capture those moments. Normally they are totally unconcious decisions and mini-thoughts. When you bring them into the concious brain you see how screwed up your thinking can be. It is an interesting little quest.
I apologise for the assumptions that I have made :)