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Start By Defining "Reliability" don't focus on "Accuracy"

Apr 6, 2018
3 min

Start By Defining "Reliability" don't focus on "Accuracy"

Purpose: To remind the Court, "thing 1" in 258(1)(c) is unconstitutional under Charter 11(d) (R v St-Onge) but is saved by section 1. To remind the Court that 258(1)(c) is saved by section 1 because of Parliament's purpose which is weight consistent with scientific reliability. To demonstrate to the Court that the SCC in St-Onge relied on the paper by Brian Hodgson. To bring that paper before the Court and make it an exhibit. To ask the government scientist to concede the def

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Mar 23, 2018
1 min

Response Drifts Over Time

Purpose: To establish that the hypothesis by the ATC/CFS, that any drift in instrument response (what Hodgson describes as significant drift in accuracy and precision over time) will always be caught by a single point control test, is not supported by any empirical study. To establish that there is no study abstracted in Wigmore on Alcohol that establishes the ATC/CFS hypothesis empirically. To confirm that the new calibration curve created after a re-calibration compared wit

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Feb 10, 2018
1 min

Causation of Error v. Calculation of Drift in Precision - Evidence Based Assessment of Reliability

What is the purpose in Stinchcombe/McNeil disclosure or O'Connor production of maintenance records and historical data? Crown CFS scientists are right in saying that there is no causal relationship between the historical data and the results of a subsequent subject test. Crown CFS scientists are incorrect in saying that maintenance records and historical data are irrelevant in assessing the scientific reliability of a measurement result. Control tests, cal. checks, and simula

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Jan 22, 2018
1 min

Distorted Concept of "Accuracy", "Precision", and "Reliability"

Purpose: To remind the Court of the concept of "reliability" used by the SCC in St-Onge. To educate the Court as to the definitions of "accuracy", "precision", and "reliability" used by Brian Hodgson in his paper relied on by the SCC in St-Onge. To focus on drift in accuracy and precision over time from: the manufacturer's specifications, and/or the accuracy and precision of the 8000 that was evaluated, and/or this specific instrument when first placed into service, as compar

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Jan 18, 2018
1 min

Durability Over Time

Purpose: To obtain admissions respecting the inadequacy of ATC / CFS recommendations in requiring "stability of metrological characteristics" over time. To obtain admissions that the Diagnostics test function only checks stability over a few seconds at best, not over weeks, months, or years following calibration by the manufacturer. To underline the concept of "over time" in Hodgson's definition of "reliability". #Hodgson #reliability #durability #metrologicalcharacteristics

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Jan 15, 2018
1 min

Manipulating Control Test Data to Enhance Precision

Purpose: To neutralize the government scientist's assertion that anomalous data should be excluded from calculation of precision. To obtain an acknowledgment of drift in precision over time (see Hodgson definition of reliability) To challenge the propriety of throwing out control test data outside 90 - 100 mg/100mls in any calculation of precision #precision #Hodgson #reliability

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