<human>:  What is the difference between primary and secondary sources?
<bot>: The main difference between primary and secondary sources is that primary sources provide direct, or firsthand, evidence or information about a topic, while secondary sources provide information from other sources and often incorporate primary sources. Primary sources are typically considered to be more authoritative and reliable, as they come from direct evidence, such as interviews, documents, and observations. Secondary sources typically involve some form of analysis or interpretation of primary sources.