If their entire feed is overwhelmed, eventually people change their mind. At least 30-40% of the feed in one study. source: https://youarenotsosmart.com/2017/02

If their entire feed is overwhelmed, eventually people change their mind. At least 30-40% of the feed in one study. source: https://youarenotsosmart.com/2017/02/11/yanss-095-how-to-fight-back-against-the-backfire-effect/ https://youarenotsosmart.com/2017/02/11/yanss-095-how-to-fig... paper: http://onlinelibrary.wiley.com/doi/10.1111/j.1467-9221.2010.00772.x/abstract http://onlinelibrary.wiley.com/doi/10.1111/j.1467-9221.2010.... Trouble is in today's world, you get to filter your data sources to things that you already believe in.