CAAF Opinion Digest · III.C.12 · Evidence

Inferences

At the court
7 digested opinions, 1999–2024 Terms
2024 (October Term)
United States v. Navarro Aguirre, 86 M.J. 43 · decided Jul 24, 2025 · No. 24-0146/AF
  1. an inference is unreasonable if it requires the jury to engage in a degree of speculation and conjecture that renders its findings a guess or mere possibility; after all, inferences must stop at some point; to this end, at some point along a rational continuum, inferences may become so attenuated from underlying evidence as to cast doubt on the trier of fact's ultimate conclusion
United States v. Saul, 86 M.J. 30 · decided Jul 21, 2025 · No. 24-0098/AF
  1. a permissive inference, also called a permissive presumption, is a presumption that a trier of fact is free to accept or reject from a given set of facts
2018 (October Term)
2014 (September Term)
United States v. Piren, 74 M.J. 24 · decided Jan 15, 2015 · No. 14-0453/AR
  1. an accused is not required to testify in his defense and his failure to do so may not be the basis for any inference against him
2003
United States v. Hall, 58 M.J. 90 · decided Feb 12, 2003 · No. 02-0243/AR
  1. evidence of urinalysis tests, their results, and expert testimony explaining them is sufficient to permit a factfinder to find beyond a reasonable doubt that an accused used contraband drugs; the factfinder may draw a permissible inference of wrongfulness from a circumstantial showing of drug use based on such evidence; this evidence is legally sufficient as long as the defense evidence of innocent ingestion could be reasonably disbelieved by the factfinder
2001
1999
United States v. Campbell, 50 M.J. 154 · decided Apr 20, 1999 · No. 97-0149/AR
  1. to sustain a drug prosecution based upon an urinalysis and to support the inferences of knowing and wrongful use, the test results must be supported by expert testimony explaining the underlying scientific methodology and the significance of the test result, so as to provide a rational basis for the inferences of knowing and wrongful use
  2. to support the inference of wrongful use of drugs, the prosecution’s expert testimony must show: (1) that the metabolite is not naturally produced by the body or any substance other than the drug in question; (2) that the cutoff level and reported concentration are high enough to reasonably discount the possibility of unknowing ingestion and to indicate a reasonable likelihood that the user at some time would have experienced the physical and psychological effects of the drug; and (3) that the testing methodology reliably detected the presence and reliably quantified the concentration of the drug or metabolite in the sample
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Last updated by the court: Oct 13, 2026 · mirrored Oct 29, 2026 · digest page IIIC12 · Always confirm a holding against the opinion itself (linked from each case name).