What does internal consistency require regarding evidence and sources?

Internal consistency pertains to the coherence of the evidence and sources presented in an argument. It requires that the evidence must not contradict itself, meaning that all pieces of evidence should support each other and form a logical and unified stance on the argument being made. When evidence is internally consistent, it reinforces the credibility of the argument, demonstrating that the claims made are reliable, coherent, and well-supported. This is critical in both advocacy and debate, where the strength of an argument often hinges on the ability to present information that forms a consistent narrative or conclusion.