People are right about their own beliefs. Their beliefs are not based on evidence, but cultural.
They could research one topic and report knowing it because of evidence (they researched it)
Additionally, there are non-scientific issues confused with "belief" in science. Does agreeing with the scientific consensus on GMOs entail a belief that corporations can be trusted to implement the science? That scientists, politicians and regulators haven't been bribed or coerced? That scientific and political systems in other countries can be judged by the scientific experts? Trusting in a practical use of GMOs is not the same as believing in the scientific consensus.
Another example:
> The Justice Department and FBI have formally acknowledged that nearly every examiner in an elite FBI forensic unit gave flawed testimony in almost all trials in which they offered evidence against criminal defendants over more than a two-decade period before 2000.
https://www.washingtonpost.com/local/crime/fbi-overstated-fo...
Yes, this! I've often thought that a lot of hereditary socioeconomic underperformance may be in some sense attributable to a self-reinforcing information deficit where people don't figure out which experts to trust, which life advice to take, which friends to make and keep. If your parents don't start you right it must be a helluva job to figure it out later.