[SystemSafety] Post Office Horizon System

[Peter Bishop]

On 07/01/2021 15:35, Derek M Jones wrote:
> Peter,
>
>> The PO used some very dodgy statistical arguments to support their
>> reliability claim
>> - rebutted in:
>>
>> https://ials.blogs.sas.ac.uk/2019/06/26/the-use-of-statistics-and-software-code/
>>
>
> I think that both sides got it wrong:
> http://shape-of-code.coding-guidelines.com/2021/01/07/likelihood-of-a-fault-experience-when-using-the-horizon-it-system/
>
>
In what way did the other side get wrong?

Most of the material submitted identified fallacies in the PO
statistical arguments
(including the lottery analogy that you included the Shape of Code
document).

-- 

Peter Bishop
Chief Scientist
Adelard LLP
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