Circumstantial Evidence and Inferences
"Evidence comes in many forms. It can be evidence about what someone saw or heard. It can be an exhibit admitted into evidence. It can be someone's opinion.
Some evidence can prove a fact directly. For example, if a witness said that s/he saw or heard it raining outside, that would be direct evidence of the fact that it was raining.
Other evidence can prove a fact indirectly. For example, if a witness said that s/he saw someone enter the courthouse wearing a raincoat and carrying an umbrella, both dripping wet, that would be indirect or ‘circumstantial’ evidence of the fact that it was raining outside. You can conclude from the witness’s evidence that it was raining, even though s/he didn’t actually see or hear the rain.
As far as the law is concerned, it makes no difference whether evidence is direct or indirect. Although people often believe that indirect or circumstantial evidence is weaker than direct evidence, that is not true. It can be just as strong or even stronger. What matters is how strong or weak the particular evidence is, not whether it is direct or indirect.
However, you must take care when drawing conclusions from indirect evidence. You should consider all of the evidence in the case, and only draw reasonable conclusions based on the evidence that you accept. Do not guess. While we might be willing to act on the basis of guesses in our daily lives, it is not safe to do that in a criminal trial." --- Judicial College of Victoria