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Microfossils found in a rock about 3.5 billion years old in Western Australia are the oldest fossils ever discovered and the earliest direct evidence of life on Earth, according to researchers at UCLA and the University of Wisconsin-Madison.

A fact is proven via actual evidence, not through inference or assumption. The fact has been proved beyond a reasonable doubt if the evidence is accurate. For instance, a witness might testify that he saw it raining outside before entering the courtroom. That witness's testimony is concrete proof that it was pouring. Direct evidence establishes the essential truth that must be proven by conclusively connecting a person to a crime. The most crucial piece of evidence needed to decide the question at hand is direct evidence, which is generally accepted. A fact is directly proven to be true or to be false by direct evidence. In the case of direct evidence, a specific fact is accepted without the need for any justification.

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