The 2015 Ipsos Perils of Perception survey reveals significant discrepancies between public perceptions and reality across various issues in 33 countries. People tend to overestimate wealth inequality, the prevalence of obesity, the level of non-religious individuals, and immigration rates, while underestimating the number of women in employment and rural populations. Overall, the survey highlights the common tendency for individuals to misjudge social demographics and statistics within their own countries.