chief executive officer of the wikimedia foundation catherine marr thank you for talking to al-jazeera thank you for having me catherine i've heard you say in the past that wikipedia is not meant to be truth what do you mean by that. what i mean by that is that we could pedia is a constantly changing record of what we agree on and i'm important it is full of facts are facts but the idea of truth is something a little more complicated that requires us negotiated together and can change at a time when truth is under assault like never before what role does wikipedia play in this media ecosystem. i think it will be competing offers is a place for us to negotiate our understanding of the world and that's what i mean when i say it's a little bit different than truth all of us have different experiences that we come to the world with and conversations that we competed as a place where volunteer editors bring those different experiences from various different and persuasion political leanings and have to negotiate to find some sort of consensus which is what we all agree on as a servant matte