The topic of legal evidence is central to the podcast episodes provided, as they both discuss key pieces of evidence that were or could be used in criminal trials.

In the episode about the Kristen Trickle case, the psychological evaluation of the defendant was a crucial piece of evidence that was scrutinized and debated in terms of its admissibility and weight. Similarly, the episode on the Donald Trump trial examines handwritten notes and other documentary evidence that the prosecution is expected to use to build their case.

Understanding the rules and standards around the types of evidence that can be presented in a criminal trial, as well as how the credibility and significance of that evidence is assessed, is key to comprehending the legal proceedings discussed in these podcast episodes.