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Direct evidence is often used in court terminology to describe evidence that straightforwardly supports the guilt or innocence of a person on trial. Unlike circumstantial evidence, which asks the judge or jury to infer reasonable conclusions, this form of evidence can stand on its own, and does not require any presumption. Video, tape recordings, and some types of witness testimony can be used as direct evidence to support a claim.
There are two major types of evidence that guide arguments in court. Circumstantial evidence requires inference to reach a desired conclusion. If the person on trial went out and bought a gun and bullets the day before the victim was shot, the prosecution will want the judge or jury to infer that the accused bought the gun to shoot the victim. Enough telling circumstantial evidence can convince people to believe that someone is innocent or guilty, but by itself cannot prove that an event took place.
True direct evidence, in contrast, leaves little or no possibility of a different conclusion. In American courts, juries and judges must believe that the accused person committed the crime beyond a reasonable doubt. This type of evidence, such as a video showing a crime, can help remove any lingering doubts about what actually happened. Although there is no legal distinction between direct and circumstantial evidence, the latter is often seen as more objective.
There are several types of direct evidence. Direct physical evidence is often limited to things like photos or video tapes which show the crime taking place. Eye witness testimony can also be considered direct evidence, as can a witness testifying to personally seeing or hearing an event.
The court assumes everyone is truthful to their oath of honesty. The jury must determine for themselves the reliability of such a witness, based on several factors. If the witness is unrelated to the case, does not know the participants, has no criminal record and no stake in the outcome of the case, he or she is generally treated as more reliable than the accused person's mother or victim's best friend.
Most strong cases use a combination of circumstantial and direct evidence to make their point. Unless the entire incident was tape recorded from beginning to end, circumstantial evidence is often at least somewhat necessary. Direct evidence is often invaluable to a case, however, and can stand alone as proof. It is the "smoking gun" that people are always looking for; the objective fact that can prove or disprove a theory.
Direct evidence is not evidence that is "objective", or "objectively proves a fact", and it has nothing to do with the credibility, reliability or the witness's motivations or feelings. The distinction is purely based on whether the evidence requires the judge or jury to make an inference about what the evidence means. That is, whether they need to "connect the dots".
The classic example of direct evidence, in any legal dictionary, is always eye-witness testimony. For example, when a witness says "I saw John raise the gun and shoot Bill," that is direct evidence because it directly supports the assertion that John shot Bill. There are no dots to be connected.
However, whether the evidence is reliable or
credible is a different issue. For example, if the defense can show that the witness was drunk, or has poor eyesight and was not wearing his glasses, or was not even present, then the evidence may be in doubt. It is still direct evidence, though.
On the other hand, if the witness says, "John and Bill went into another room. I heard a loud bang, and when I went into that room, Bill was on the floor, shot dead, and John was holding a gun with smoke coming out of the barrel," that is not direct evidence. It is circumstantial -- because now there are plenty of dots to be connected; multiple inferences are possible. Did John simply murder Bill? Or was it an accident? Or was John possibly acting in self-defense?
So what about scientific evidence then? The true answer is that it depends on what the scientific evidence (DNA, fingerprints, etc) is being used for. If the scientific evidence is being used to support the assertion of guilt or innocence, then it is almost always circumstantial -- because it is requires the jury to connect the dots.
For example, the defendant's bloody fingerprint is found on the murder weapon. Does this directly prove the defendant's guilt? Why, no! There could be many explanations for that. What the evidence does show is that the defendant handled the knife after the knife became covered in blood -- but whether that means the defendant killed the victim will depend on, well, circumstances. For instance, if it can be shown that both the defendant and the victim were alive when they entered the scene, that no-one else could possibly have been present, and that the wounds could not have been self-inflicted or have occurred by accident (that is, the victim did not fall on the knife), then the fingerprint is highly significant -- but it is still circumstantial, because inferences have to be made, and those inferences will depend on other factors -- that is, the circumstances.
The same is true of DNA or any scientific evidence. DNA evidence is not cast-iron proof of guilt, and it does require inferences to be made and circumstances to be taken into account. The presence of DNA may prove someone was present, but it does not, for example, prove when they were present or what actually happened. In the case of sexual offenses, for example, DNA may prove contact -- but it tells us nothing about when that happened, or whether there was consent. That is why it's circumstantial, whereas the evidence of a witness who says "I saw John rape Mary" is direct.
In closing, I'll support what I'm saying by quoting the famous prosecutor and author, Vincent Bugliosi: "Circumstantial evidence has erroneously come to be associated in the public mind and vernacular with a weak case. ('Oh, that's just circumstantial evidence.') But nothing could be further from the truth. In fact, most first degree murder cases are based on circumstantial evidence. This is so because other than eye-witness testimony (and in some jurisdictions, a confession), which is direct evidence, all other evidence, even fingerprints and DNA, is circumstantial evidence."
I hope this helps.
@zenmaster -- From what I understand, you can make objections about direct evidence, especially under the rules of evidence collection and management.
I think that a lot of objections can be made about whether the evidence was gathered legally, or whether it was damaged while in an evidence storage lock-up, or even if it is truly objective.
I'm not a lawyer or anything, but those are some potential objections that I can see coming out about direct evidence.
As far as evidence goes, is direct evidence open to objections the same way that other evidence is?
Nicely done -- it can be hard to understand the difference in direct evidence vs circumstantial evidence, especially when it comes to the Federal rules on evidence.
There have been so many changes in the standards of evidence, especially health evidence like DNA or forensic evidence are collected and used, so it's important for people to be able to understand this distinction before they get put on jury duty and it actually matters.
Very nicely done.
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