I'm wondering if I've stumbled on a bug here. I noticed recently that I'd achieved the silver badge on "concurrency" on SO. Yay to me.


There are 3 other guys that have done so -- of course Jon is one. So then I wondered who else is close to their silver for this category and so I go to the top-users page:


I was surprise to see Don Stewart above me at 450 points and yet has not gotten the silver badge for concurrency as far as I can tell. It's not on his user page or in the concurrency badge page.

Is this a bug or am I not understanding how the badge is calculated?

As always, thanks for SO. Always a great resource.

  • 3
    He needs 50 more answers... it's said right there in the badge description page that you linked to. Sep 13, 2013 at 20:22

1 Answer 1


You must have a total score of 400 in at least 80 non-community wiki answers to achieve this badge.

So, they're currently 50 answers short of the 80 for the badge to click in...

  • Duh. Thanks. Should have realized. Thanks.
    – Gray
    Sep 13, 2013 at 20:24

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