But can people actually stab themselves in the chest,.. twice?
There is a quite abundant forensic literature on the subject of stabbing, but, just to be clear, most stabbing deaths are homicides: according to a study which considered 700 cutting and stabbing fatalities (and keep in mind that this also includes death by cutting not stabbing) 80% were due to homicide, and only 18% to suicide, while the rest, 2 %, was due to accident.
According to the Bureau of Justice Statistics, a knife is the second weapon used after firearm: 16.5% of all murders are caused by knives versus 64% by firearm. But when people murder their boyfriend or girlfriend, the statistics are even more revealing as 32.8% of offenders used a knife to murder their partner, while 47.2% used a firearm. These are just statistics but a knife is definitively a common weapon used during domestic violence. In a recent article in the SF Weekly, emergency domestic violence calls involving a gun went up 53 % and calls involving a knife increased 87 % last year. Let’s keep in mind that knives are commonly used in case of domestic violence and Elliott and his girlfriend had been fighting that day, she admitted it to the police and neighbors heard the screaming
If we examine the possibility of suicide by stabbing, there are a few points to consider:
– Suicides by stabbing do exist but they are very rare: According to many studies, suicide by sharp force injuries account for less than 2% of all suicides, so the choice of a knife or any other sharp instrument to commit suicide is unusual. Furthermore, many studies say that the most common sites for self-inflicted incised wounds are the neck and the abdomen, not the chest. So there are actually far less than 2% of people who commit suicide by stabbing themselves in the chest. Plus, the thorax is the most targeted region for homicide victims whereas suicides by cutting mostly target and the upper limbs, the neck or the wrists
– The time of the day: This happened in the middle of the day, whereas studies reveal that most of the self-inflicted stabbings (69%) occurred at night or in the early hours of the morning, and very few self-stabbings are actually witnessed by someone else. It is obviously a very dramatic scene to witness which could have traumatized her for life or made her look guilty. Did Elliott want to do that to her?
– Sternum and ribs injuries: According to a large study including 118 sharp force fatalities, there is a much higher likelihood of a homicide if bone or cartilage wounds are found (they were found in 74.3% of the cases) and a higher likelihood of a suicide if these wounds are absent (they were only found in 14.6% of the cases). Suicide victims tend to avoid solid anatomical structures, such as ribs and sternum whereas the frequency of bone or cartilage wounds in homicides is high because assailants ignore the presence of bones. In Elliott’s case, stab wound #1 injured intercostal space, and stab wound #2 ‘perforated the left edge of the sternum’. Elliott’s perforated sternum speaks volume.
– The depth of the wounds: Wounds caused by assailants to their victims are generally more severe than those self-inflicted. On the autopsy report, the estimated depth of penetration of Elliott’s wound #2 is between 5 and 7 inch (12.7 -17.8 cm) which is quite severe.
– The clothes: Elliott was stabbed with his clothes on, and this is very significant once again as studies show that clothing damage is relatively rare in case of suicide (between 4% to 39% depending on the studies) whereas the stabbing is made through clothing in most homicides. In the case of suicides, the person generally exposes the chosen area before the stabbing and there is no clothing damage.
– The lack of hesitation wounds: When a person stabs itself, hesitation wounds (superficial incised wounds) are often made before the fatal deep wound. They indicate indecision before the final act. Elliott didn’t have any hesitation wounds around the large stab wounds in his chest and his neck and wrists were intact. According to many studies, hesitation marks are a strong indicator of suicide, they are present in most cases of suicides (>70%) and are even believed to be the most useful indication in distinguishing suicide from homicide.
– The possible defense wounds: Elliott had small cuts on his left palm and right upper arm, which could be interpreted as possible defense wounds. They were very small, but according to the doctor who did the autopsy, they could have also been done when mishandling the knife but they were certainly not due to intentional self-harm. Since Elliott was right-handed, the cut on his right arm is weird. Obviously, defense wounds are a strong indication of homicide and were detected in 61% of the cases in a large study. They are most frequently found on hands, arms, and forearms.
To sum this up with the strongest points:
Suicide by stabbing only represents 2% of all suicides
Bone injuries are only found in 14.6% of the cases
Clothing damage is only found in 39% of the cases at the most
The absence of hesitation marks represents less than 30% of the cases
For what it’s worth, if we consider all these statistics which characterize Elliott’s case altogether, we can do this simple calculation:
0.02 x 0.146 x 0.39 x 0.30 = 0.0003, so 0.03 %… Elliott’s case would represent this astronomically low statistic (0.03%)… is it even possible?