Why is itnsometimes difficult foor historians to verify information?

Historians often face challenges in verifying information due to the scarcity of primary sources, which can lead to reliance on secondary accounts that may be biased or inaccurate. Additionally, historical documents may be lost, damaged, or intentionally altered, complicating efforts to establish authenticity. Contextual factors, such as cultural differences and the passage of time, can also obscure the meanings and interpretations of events. This complexity requires historians to critically analyze and corroborate multiple sources to construct a more accurate understanding of the past.