[tz] Unacceptable recent changes

[Stephen Colebourne]

On 29 August 2013 14:53, Petr Machata <pmachata at redhat.com> wrote:
> Stephen Colebourne <scolebourne at joda.org> writes:
>
>> The point I'm making is that end-users of this data assume it to be
>> stable and reliable. Moreover, the vast majority of those users do not
>> care whether the data pre-1970 is accurate or not. Stable yes,
>> accurate no.
>
> I don't think you can assume stability either.  We occasionally revisit
> old data to correct them.  There's some guesswork involved in the way
> some zones are defined even in relatively recent past, let alone
> pre-1970, and when better information becomes available, those entries
> are changed.

That is known and acceptable. It still falls under the "stable" category.

What isn't stable is deleting data or changing IDs without really good reason.

Stephen