Re: Purely informational XML documents is an illusion

On Tue, 21 Feb 2023 at 19:27, Roger L Costello <[email protected]> wrote:

> Hi Folks,
>
>
>
>
>
> "Okay Roger, let's suppose that what you say is true and every sentence is
> an instruction. So what?"
>
> Here's the so what:
>
> - Instructions elicit behavior.
>
> - Instructions have semantics.
>
> - Semantics can be represented by an interpreter.
>
> Got two data formats and you want to know if they are equivalent?
> Comparing the data formats item by item is a Sisyphean task. Instead, write
> an interpreter for each data format, run instances of the data formats
> through the interpreters and compare their outputs. If their outputs are
> the same, the data formats are equivalent. If their outputs differ, the
> data formats are not equivalent.
>
>

Running unknown code has risks, and testing can only tell you the formats
are different, not that they are the same.


Do you agree with my argument?
>

No.


>
> /Roger
>
> David