Because of the complexity of causality in crime and the legal system, statistics are not convincing in and of themselves.
The unfortunate part for many of the statistics is that few statistics with such trends exist, and of the few that do, no correlation is explained, only assumed.
A majority of the statistics regarding deterrence via the death penalty are in favor of the opposite.
Especially if we murder enough murderers and give it a chance.
Unfortunately, the argument of deterrence is a rather weak on now that we have statistics and data and a more sober perspective of the issue with thousands of years of its use.
When Thomas Aquinas wrote, “The civil rulers execute, justly and sinlessly, pestiferous men in order to protect the peace of the state,” he was probably under the same misguided impression as today’s advocates of the death penalty that murdering murderers prevents murdering.
He was also probably under an understandable impression that his prediction would be proven right someday with statistics and data, much like modern supporters who may be aware that there are no real statistics that prove the death penalty is a deterrent to violent crime yet hope there someday will be. It does not necessarily reflect the views expressed in Rational Wiki's Mission Statement, but we welcome discussion of a broad range of ideas.Unless otherwise stated, this is original content, released under CC-BY-SA 3.0 or any later version. Feel free to make comments on the talk page, which will probably be far more interesting, and might reflect a broader range of Rational Wiki editors' thoughts.“Over the next 20 years the homicide rate in Canada fluctuated (between 2.2 and 2.8 per 100,000), but the general trend was clearly downwards.It reached a 30-year low in 1995 (1.98) – the fourth consecutive year-to-year decrease and a full one-third lower than in the year before abolition.Said conclusions include the fact that it is not, as those in favor of the death penalty will argue with arguably inconclusive statistics, a deterrent to violent crime, is not an acceptable penalty for a violation of the social contract, is not more "economical" than life imprisonment, and by its nature permits a risk of executing innocent individuals regardless of the implementation of numerous safeguards.Addresses the applications of punishment in Western penal and judicial systems, the argument of deterrence, the social contract, the subservient position of the state in relation to its population, miscarriages of justice, human rights abuses, and the appeal to emotion.Justice Arthur Chaskalson, President of the South African Constitutional Court, Chief Justice of the Republic of South Africa in a 1995 decision he favored that ruled South Africa's death penalty unconstitutional.From this very point, we come to focus on the issue not domestically, but globally, and can draw serious conclusions about the nature of capital punishment with information from various countries and their subdivisions with very different circumstances surrounding the death penalty.In 1998, the homicide rate dipped below 1.9 per 100,000, the lowest rate since the 1960s.” In the United States, 10 of the 12 states without capital punishment have homicide rates below the national average, Federal Bureau of Investigation data shows, while half the states with the death penalty have homicide rates above the national average.In a state-by-state analysis in the US of the last 20 years, the homicide rate in states with the death penalty has been 48 percent to 101 percent higher than in states without the death penalty.