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PhilGoetz comments on The Universal Medical Journal Article Error - Less Wrong Discussion

6 Post author: PhilGoetz 29 April 2014 05:57PM

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Comment author: PhilGoetz 06 April 2013 02:55:51PM *  0 points [-]

Well, dammit, I wanted to delete this and rewrite above, but you can't delete comments anymore. This is not retracted, but I can't un-retract it.

You are wrong, and you have not learned to reconsider your logic when many smart people disagree with you.

Comment author: Douglas_Knight 06 April 2013 03:33:31PM *  2 points [-]

You can delete retracted comments by reloading the page and clicking on a new delete icon that replaces the retract icon.

Comment author: arundelo 06 April 2013 03:46:05PM 3 points [-]

Only if no-one's replied to them.

Comment author: TimS 06 April 2013 04:26:11PM 2 points [-]

I'm not sure that's true. See here

Comment author: ArisKatsaris 06 April 2013 06:38:12PM *  4 points [-]

People can reply to any comments that they still see in their browser page, even though they've been "deleted", if the replier has not refreshed said browser page.

EDIT TO ADD: As I see that wedrifid also mentions below.

Comment author: Eugine_Nier 08 April 2013 04:34:16AM 1 point [-]

Possibly there is also a similar effect if the deleter hasn't refreshed his browser page.

Comment author: wedrifid 08 April 2013 04:43:45AM *  1 point [-]

Possibly there is also a similar effect if the deleter hasn't refreshed his browser page.

Possibly. Specifically it would be if you (as the example) had retracted the page then refreshed it (to get the 'delete' button available to you) and then there is an arbitrary period of time after which you click the delete button without first refreshing again. (Untested, but those are the circumstances under which it would be at all possible if the code is not specifically designed to prevent it.)

Comment author: Douglas_Knight 06 April 2013 04:47:24PM *  0 points [-]

Why are you not sure of facts that are subject to easy experiments? (update: arundelo is correct)

Comment author: TimS 06 April 2013 05:01:10PM 3 points [-]

Experiment clutters the venue, and being less blunt avoids the appearance of a status conflict.

Comment author: Douglas_Knight 06 April 2013 05:17:32PM 0 points [-]

If deletion is possible, there is very little clutter. If deletion is not possible, and the comment says "I can't figure out how to delete this," at least it discourages other people's experiments. But this thread is itself clutter, so I don't think that is your true rejection. As to bluntness, I conclude that my being less blunt caused you to confabulate bullshit.

PS - I experiment on the open thread.

Comment author: TimS 06 April 2013 05:23:28PM 1 point [-]

As to bluntness, I conclude that my being less blunt caused you to confabulate bullshit.

On reflection, it is probably more accurate for me to say, "I wasn't interested in experimenting, including for concern that the experimenting would look low status, and I have higher preferred ways of acting low status."

As for my own choice not to be blunt, you are not correctly modelling my thought process.

In short, I gave two reasons for my action, and you might be right that one was confabulation, but not the one you identify as confabulation.

Comment author: wedrifid 06 April 2013 05:25:26PM 1 point [-]

Why are you not sure of facts that are subject to easy experiments? (arundelo is wrong)

I have performed the experiment in question and it seems to support arundelo's claim. I am not able to remove this comment. At the very least it demonstrates that the experiment required to prove arundelo's fully general claim is false is not the 'easy' one.

Comment author: TimS 06 April 2013 05:45:08PM *  0 points [-]

Well, now I'm totally confused. Checking Eugine_Nier's account on ibiblio shows that the comment is missing. (Searching for the word "sarcasm" will get you to about when the comment took place, at least as of the date of this comment)

Comment author: wedrifid 06 April 2013 05:55:00PM 1 point [-]

Well, now I'm totally confused. Checking Eugine_Nier's account on ibiblio shows that the comment is missing. (Searching for the word "sarcasm" will get you to about when the comment took place, at least as of the date of this comment)

See my investigation. Short answer: race condition.

Comment author: Douglas_Knight 06 April 2013 05:34:16PM *  0 points [-]

Thanks actually experimenting. My beliefs were two months out of date. I stand by my objection to Tim's comment.

Comment author: wedrifid 06 April 2013 04:38:23PM *  -1 points [-]

I'm not sure that's true. See here

It is possible that the comment was banned by a moderator rather than deleted by the author. (If so, it will still appear if you look at the user's comment page.)

After retraction EDIT: TimS. I can't seem to delete this comment even after refreshing.

Comment author: TimS 06 April 2013 05:04:50PM 1 point [-]

As it happens, I remember what Eugine_Nier wrote, and I am certain it did not meet the local criteria for mod-blocking.

(Anonymous downvoter: What is it in wedrifid's post you'd like to see less of? Helpful commentary about the mechanics of this site is not on my list of things to downvote).

Comment author: wedrifid 06 April 2013 05:08:22PM *  6 points [-]

As it happens, I remember what Eugine_Nier wrote, and I am certain it did not meet the local criteria for mod-blocking.

Interesting. This suggests that a feature has changed at some point since the retraction-then-delete feature was first implemented. (I have memories of needing to be careful to edit the text to blank then retract so as to best emulate the missing 'delete' feature.)

I notice that I am confused. Investigates.

  • Testing deletion feature. Deletion of (grandparent) comment that you have already replied to: Fail. It is still not (usually) possible to delete comments with replies.
  • Check for moderator deletion. (ie. Moderator use of the ban feature, actual delete per se is extremely rare). Confirm absence of a reply on Eugine_Nier's page that fits that part of history. The comment is, indeed, deleted not banned.
  • Check timestamps for plausibility of race condition. Ahh. Yes. Tim, you replied to Eugine within 3 minutes of him writing the comment. This means that most likely Eugine deleted his message while you were writing your reply. Your comment was still permitted to be made despite the deleted parent. The reverse order may also be possible, depending on the details of implementation. Either way, the principle is the same.
Comment author: TimS 06 April 2013 06:42:29PM *  0 points [-]

ArisKatsaris suggests browser refresh, not timestamps, is the issue.

Comment author: wedrifid 06 April 2013 07:02:58PM *  2 points [-]

ArisKatsaris suggests browser refresh, not timestamps, is the issue.

He is describing the same phenomenon. The timestamps give an indication as to how likely the race condition is to occur based on the delays between GETs and POSTs. If the comments were a day apart I would have tentatively suggested "Perhaps one of you deleted or replied to a comments page that was old?". Whereas given that the timestamps were within 3 minutes I could more or less definitively declare the question solved.

Comment author: TimS 06 April 2013 08:57:20PM 1 point [-]

Thanks. I'm not technologically fluent enough to tell the difference between what you said and what he said without the explanation.

Comment author: Eugine_Nier 08 April 2013 04:36:39AM 2 points [-]

For the record, I did in fact delete the comment.