Humans are more likely to change their minds when fewer, rather than more, people disagree with them.
A group of psychologists working at HP’s Social Computing Research Group asked several hundred people to choose between two pieces of furniture. After a varying amount of time, they were asked to choose again between the items, but told that a certain number of other people had preferred the opposite item.
When an overwhelming number of people were shown as having made a different choice, people tended to stick with their original selections.
Read more at Wired Science