http://www.nytimes.com/2014/05/16/upshot/women-and-the-i-dont-know-probl...

I'm looking forward to discussing this with Chemguy later.  I'm pretty opinionated, but I also use many qualifiers as it opens me up to express what I think while staying open minded when I'm not sure of all the details.  I probably do so a bit less when writing than when speaking.