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The '''Howland will forgery trial''' was a [[United States|U.S.]] court case in 1868 to decide [[Henrietta Howland Robinson]]'s contest of the [[Will (law)|will]] of Sylvia Ann Howland. It is famous for the [[forensic]] use of [[mathematics]] by [[Benjamin Peirce]] as an [[expert witness]]. | |||
==History== | |||
Sylvia Ann Howland died in 1865, leaving roughly half her fortune of some 2 million [[USD|dollars]] (equivalent to approximately {{formatnum:{{Inflation|US|2|1865|r=1}}}} million {{CURRENTYEAR}} dollars) to various legatees, with the residue to be held in [[Trust law|trust]] for the benefit of Robinson, Howland's niece. The remaining principal was to be distributed to various beneficiaries on Robinson's death. | |||
Robinson produced an earlier will, leaving her the whole estate outright. To the will was attached a second and separate page, putatively seeking to invalidate any subsequent wills. Howland's [[executor]], Thomas Mandell, rejected Robinson's claim, insisting that the second page was a forgery, and Robinson sued. | |||
In the ensuing case of ''Robinson v. Mandell'', [[Charles Sanders Peirce]] testified that he had made pairwise comparisons of 42 examples of Howland's signature, overlaying them and counting the number of [[Ballistic stroke|downstrokes]] that overlapped. Each signature featured 30 downstrokes and he concluded that, on average, 6 of the 30 overlapped, 1 in 5. [[Benjamin Peirce]] showed that the number of overlapping downstrokes between two signatures also closely followed the [[binomial distribution]], the expected distribution if each downstroke was an independent event. When the admittedly genuine signature on the first page of the contested will was compared with that on the second, all 30 downstrokes coincided, suggesting that the second signature was a tracing of the first. | |||
[[Benjamin Peirce]], Charles' father, then took the stand and asserted that, given the independence of each downstroke, the [[probability]] that all 30 downstrokes should coincide in two genuine signatures was <math>\textstyle\frac{1}{2.666 \times 10^{21}}</math>.<ref>"one in 2,666,000,000,000,000,000,000", that is, in the [[order of magnitude]] of sextillions</ref> He went on to observe {{Cquote|So vast improbability is practically an impossibility. Such evanescent shadows of probability cannot belong to actual life. They are unimaginably less than those least things which the law cares not for. ... The coincidence which has occurred here must have had its origin in an intention to produce it. It is utterly repugnant to sound reason to attribute this coincidence to any cause but design.}} | |||
The court ruled that Robinson's testimony in support of Howland's signature was inadmissible as she was a party to the will (see [[conflict of interest]]). The statistical evidence was not called upon in judgment. | |||
The case is one of a series of attempts to introduce mathematical reasoning into the courts. ''[[People v. Collins]]'' is a more recent example. | |||
==Notes== | |||
{{reflist}} | |||
==Bibliography== | |||
* Eggleston, Richard (1983) ''Evidence, Proof and Probability'' ISBN 0-297-78263-0 | |||
* ''Robinson v. Mandell'', 20 ''F. Cas.'' 1027 (C.C.D. Mass. 1868) (No. 11,959) | |||
* [[Louis Menand|Menand, L.]] (2002) ''[[The Metaphysical Club: A Story of Ideas in America]]'' ISBN 0-00-714737-6, pp163–176 | |||
* Meier, P. & Zabell, S. (1980) "Benjamin Peirce and the Howland Will", 75 ''Journal of the American Statistical Association'' vol. 75 p497 | |||
* "The Howland Will Case", ''American Law Review'' vol. 4 p625 (1870) | |||
* Leila Schneps and Coralie Colmez, ''Math on trial. How numbers get used and abused in the courtroom'', Basic Books, 2013. ISBN 978-0-465-03292-1. (Ninth chapter: "Math error number 9: choosing a wrong model. The case of Hetty Green: a battle of wills"). | |||
{{Portal bar|Law|United States}} | |||
{{DEFAULTSORT:Howland Will Forgery Trial}} | |||
[[Category:Document forgery]] | |||
[[Category:Forensic statistics]] | |||
[[Category:1868 in United States case law]] |
Revision as of 02:21, 4 October 2013
The Howland will forgery trial was a U.S. court case in 1868 to decide Henrietta Howland Robinson's contest of the will of Sylvia Ann Howland. It is famous for the forensic use of mathematics by Benjamin Peirce as an expert witness.
History
Sylvia Ann Howland died in 1865, leaving roughly half her fortune of some 2 million dollars (equivalent to approximately Template:Inflation million 2024 dollars) to various legatees, with the residue to be held in trust for the benefit of Robinson, Howland's niece. The remaining principal was to be distributed to various beneficiaries on Robinson's death.
Robinson produced an earlier will, leaving her the whole estate outright. To the will was attached a second and separate page, putatively seeking to invalidate any subsequent wills. Howland's executor, Thomas Mandell, rejected Robinson's claim, insisting that the second page was a forgery, and Robinson sued.
In the ensuing case of Robinson v. Mandell, Charles Sanders Peirce testified that he had made pairwise comparisons of 42 examples of Howland's signature, overlaying them and counting the number of downstrokes that overlapped. Each signature featured 30 downstrokes and he concluded that, on average, 6 of the 30 overlapped, 1 in 5. Benjamin Peirce showed that the number of overlapping downstrokes between two signatures also closely followed the binomial distribution, the expected distribution if each downstroke was an independent event. When the admittedly genuine signature on the first page of the contested will was compared with that on the second, all 30 downstrokes coincided, suggesting that the second signature was a tracing of the first.
Benjamin Peirce, Charles' father, then took the stand and asserted that, given the independence of each downstroke, the probability that all 30 downstrokes should coincide in two genuine signatures was .[1] He went on to observe Benefits of Living in a Rental or Landed property in Singapore Property New Launches & Undertaking Showcase In Singapore Many residential Singapore property gross sales contain shopping for property in Singapore at new launches. These are often properties below development, being sold new by developers. New Launch Singapore Property, 28 Imperial Residences Coming To Geylang Lorong 26 The property market is slowing down, in accordance with personal property transactions in Could Cellular Apps FREE Signal Up Log in Property Agents Feedback
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The court ruled that Robinson's testimony in support of Howland's signature was inadmissible as she was a party to the will (see conflict of interest). The statistical evidence was not called upon in judgment.
The case is one of a series of attempts to introduce mathematical reasoning into the courts. People v. Collins is a more recent example.
Notes
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Bibliography
- Eggleston, Richard (1983) Evidence, Proof and Probability ISBN 0-297-78263-0
- Robinson v. Mandell, 20 F. Cas. 1027 (C.C.D. Mass. 1868) (No. 11,959)
- Menand, L. (2002) The Metaphysical Club: A Story of Ideas in America ISBN 0-00-714737-6, pp163–176
- Meier, P. & Zabell, S. (1980) "Benjamin Peirce and the Howland Will", 75 Journal of the American Statistical Association vol. 75 p497
- "The Howland Will Case", American Law Review vol. 4 p625 (1870)
- Leila Schneps and Coralie Colmez, Math on trial. How numbers get used and abused in the courtroom, Basic Books, 2013. ISBN 978-0-465-03292-1. (Ninth chapter: "Math error number 9: choosing a wrong model. The case of Hetty Green: a battle of wills").
- ↑ "one in 2,666,000,000,000,000,000,000", that is, in the order of magnitude of sextillions