You seem to not be getting it.
What is "proof"?
In essence, "proof" is the evidence or argument sufficient to establish the truth of something or to persuade a reasonable person that a particular fact exists. It's about convincing others of the truth of a claim based on solid information.
This concept is important across various fields, including mathematics, law, and everyday life. For example, in criminal trials, all elements of a crime must be proven beyond a reasonable doubt for a conviction.
Why can't proof be solely based on one person's word?
Relying solely on one person's word, or testimony, as definitive proof can be problematic due to several inherent limitations:
Human Memory is Fallible: Memories are not like perfect video recordings; they can be distorted or degraded over time and influenced by various factors, according to John J. Malm & Associates Personal Injury Lawyers. Stress, trauma, and even subsequent conversations can impact the accuracy of what someone recalls.
Influence of Suggestion and Bias: External factors, such as leading questions or biased lineup procedures, can unknowingly influence a person's memory and subsequent testimony. According to attorneys at Summers Rufolo & Rodgers, studies show that police relying solely on eyewitnesses can lead to problems. A person's own biases can also subconsciously color their perception and memory of events, states Hildreth & Rueda Law.
Lack of Corroboration: While a single testimony might be taken as truthful by itself, Quora explains that it can't necessarily be proven truthful in court unless there is corroboration by other testimony, evidence and actions. In many legal systems, corroborating evidence is often required to strengthen the credibility of a witness's testimony, especially in criminal cases or where specific claims like fraud are involved, notes US Legal Forms.
Cognitive Biases: As explained by psychotricks.com, people are susceptible to various cognitive biases that can affect their judgment and how they interpret information. For example, confirmation bias leads people to favor information that confirms their existing beliefs, while the availability heuristic can make them overestimate the likelihood of events that are easily recalled. These biases can make it difficult for individuals to objectively assess a situation or recall events accurately.
Intentional Dishonesty: While often not the primary concern in discussing reliability, the possibility of a person deliberat