* No reliable data: There are no large-scale, scientific surveys specifically asking about flat Earth beliefs.
* Online communities: Many flat Earthers are active online but may not publicly declare their beliefs offline.
* Social stigma: Some people may hold flat Earth beliefs but choose not to express them due to social stigma or fear of ridicule.
* Fluctuating numbers: The popularity of flat Earth theories has fluctuated over time, making it difficult to establish a consistent number.
However, it's important to understand:
* Flat Earth beliefs are a fringe minority: Despite the online presence of flat Earth proponents, the overwhelming majority of scientists and the general population accept the Earth's spherical shape.
* Flat Earth beliefs are not supported by evidence: The evidence for a spherical Earth is abundant and conclusive, based on scientific observation, experimentation, and independent verification.
While there are no precise figures, it's safe to say that the number of people who believe in a flat Earth is relatively small compared to the global population.
