Anything that makes you think. Anything that challenges your preconceived notions about how or why something works. Maybe it's mildly inspiring.
|Apr 1, 2014||/r/headscratcher is born|
Subreddit GrowthHow /r/headscratcher growth compares with growth of 1,863,286 other subreddits.
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|No. 1,497,693||Fastest growing last 7 days|
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|No. 1,495,522||Fastest growing last 90 days|