There's no evidence behind the majority of policies of any Wikimedia project, so I don't think that's really an expectation.
As to enwiki, it appears that the 4-day threshold was in place well before 2008, but the 10-edit threshold was added in 2008: https://en.wikipedia.org/wiki/Wikipedia:Autoconfirmed_Proposal/Poll
The related "bugzilla" (now phabricator) ticket is here: https://phabricator.wikimedia.org/T16191
It was pretty clearly the position of Brion, the lead developer at the time, that even making the change from 0 to 10 edits would be essentially inconsequential; however, he did make that change. (Most of that ticket is an argument that the Enwiki community wanted a 7 day/20 edit threshold, and complaining that it wasn't applied.) My sense is that adding the edit requirements actually did make a difference, although not really because it resulted in vandalism/trolling accounts being left unused. It made them easier to spot. I believe they also reduced the move vandalism that we were experiencing at a ridiculous rate at the time.
I'm sure you'd be able to find similar discussions at other projects; I just remember this one because I participated in it.
Risker/Anne
On Mon, 4 Oct 2021 at 06:19, Amir E. Aharoni amir.aharoni@mail.huji.ac.il wrote:
I've been involved in this lengthy circular debate: What should be the autoconfirmed age and article count in the Hebrew Wikipedia? See https://phabricator.wikimedia.org/T243076 if you curious about this particular one, but I'd love to ask a more global question:
How were these numbers calculated originally?
For the account age, the default is four days, or five or seven days for a few wikis.
For the edit count, the default is zero, but several wikis have 5, 10, 25, or 50.
(See https://noc.wikimedia.org/conf/highlight.php?file=InitialiseSettings.php and search for "wgAutoConfirmAge" and "wgAutoConfirmCount".)
Some wikis have groups, usually called "extended confirmed", and with higher counts; for example, 500 edits in English and some other languages (search for wmgAutopromoteOnceonEdit on the same page).
So, how did the people arrive at these numbers? Why is it four days by default? Is it all just intuition and guesses, or was there any research behind it?
Is it *good* that four days is the default for everyone, until someone bothers to update it (most wikis don't)? Or is it just a coincidence that was defined for a certain wiki and applied elsewhere? And when it's updated, why is it updated to one number and not some other?
While I am an ardent supporter of the "anyone can edit" principle, it makes general sense to have some restrictions based on edit count, account age, and perhaps other parameters. But HOW are they calculated? Would it make sense to anyone to start making some calculations around it and optimize the number for wikis of different sizes?
I'd imagine that there could be a calculation that says "in a given wiki, the chance of being reverted or blocked goes down after X days and X edits", and this number is probably different for every wiki (maybe there already is such a calculation somewhere). This could possibly be a starting point for a good calculation of a threshold; it wouldn't be perfect, because in some wikis it can perpetuate community practices which may be biased against new editors, but at least it's based on data and not on guesses.
In the English Wikipedia 2016 discussion[1] about adding the "extended confirmed" group, I found one comment, by User:Opabinia regalis, which corresponds to my thinking on the topic: "The thresholds being used for these restrictions are essentially arbitrary, and we don't have a strong evidence base yet that they are well-chosen."
Perhaps after twenty years we could start actually calculating these thresholds, and not just come up with arbitrary numbers? Or is there really no demand for smart and research-based decisions about these thresholds?
[1] https://en.wikipedia.org/wiki/Wikipedia:Village_pump_(proposals)/Archive_129...
-- Amir Elisha Aharoni · אָמִיר אֱלִישָׁע אַהֲרוֹנִי http://aharoni.wordpress.com “We're living in pieces, I want to live in peace.” – T. Moore _______________________________________________ Wikimedia-l mailing list -- wikimedia-l@lists.wikimedia.org, guidelines at: https://meta.wikimedia.org/wiki/Mailing_lists/Guidelines and https://meta.wikimedia.org/wiki/Wikimedia-l Public archives at https://lists.wikimedia.org/hyperkitty/list/wikimedia-l@lists.wikimedia.org/... To unsubscribe send an email to wikimedia-l-leave@lists.wikimedia.org