This is an atheist talk, but I am really not posting it in that capacity at all. Please don't discuss the religious angle here, I'm not trying to have that discussion.
This is a really good talk about the assumptions we make when we talk to other people, about our presumed correctness of our own views, the flaws in our reasoning abilities, etc. And our willingness to disengage and dismiss people who disagree with our positions, even when they are making reasonable arguments.
I think if you get into a lot of intense discussions on G+, this should be required viewing. No matter what your religious, political, or philosophical beliefs are.(Un)Safe Assumptions :: Matt Dillahunty