{"generator":"GNU social 2.0.2-dev","title":"Conversation","totalItems":1,"items":[{"actor":{"id":"https:\/\/noc.social\/users\/todayilearned","displayName":"Today I learned","status_net":{"avatarLinks":[{"url":"https:\/\/gnusocial.jp\/avatar\/45561-original-tmp20240526080439.webp","rel":"avatar","type":"image\/webp","width":256,"height":256},{"url":"https:\/\/gnusocial.jp\/avatar\/45561-96-20240526153207.webp","rel":"avatar","type":"image\/webp","width":96,"height":96},{"url":"https:\/\/gnusocial.jp\/avatar\/45561-48-20240526153207.webp","rel":"avatar","type":"image\/webp","width":48,"height":48},{"url":"https:\/\/gnusocial.jp\/avatar\/45561-24-20240527020632.webp","rel":"avatar","type":"image\/webp","width":24,"height":24}],"profile_info":{"local_id":"45561"}},"image":{"url":"https:\/\/gnusocial.jp\/avatar\/45561-96-20240526153207.webp","rel":"avatar","type":"image\/webp","width":96,"height":96},"objectType":"person","summary":"Based on rss feed of reddit&#39;s r\/todayilearned","url":"https:\/\/noc.social\/@todayilearned","portablecontacts_net":{"preferredUsername":"todayilearned","displayName":"Today I learned","note":"Based on rss feed of reddit&#39;s r\/todayilearned"}},"content":"<p>TIL in 2002, it was mathematically proven that properly comparing the wealth of nations (or of a nation to itself in the past) is impossible<\/p><p><a href=\"https:\/\/pure.uva.nl\/ws\/files\/2255113\/131873_An_impossibility_theorem.pdf\" rel=\"nofollow noreferrer\">https:\/\/pure.uva.nl\/ws\/files\/2255113\/131873_An_impossibility_theorem.pdf<\/a><br \/><a href=\"https:\/\/noc.social\/tags\/til\" class=\"mention hashtag\" rel=\"tag\">#til<\/a> <a href=\"https:\/\/noc.social\/tags\/todayilearned\" class=\"mention hashtag\" rel=\"tag\">#todayilearned<\/a><br \/><a href=\"https:\/\/www.reddit.com\/r\/todayilearned\/comments\/1qmoaf7\/til_in_2002_it_was_mathematically_proven_that\/\" rel=\"nofollow noreferrer\">https:\/\/www.reddit.com\/r\/todayilearned\/comments\/1qmoaf7\/til_in_2002_it_was_mathematically_proven_that\/<\/a><\/p>","generator":{"id":"tag:gnusocial.jp,2026-05-28:notice-source:ActivityPub","objectType":"application","status_net":{"source_code":"ActivityPub"}},"id":"https:\/\/noc.social\/users\/todayilearned\/statuses\/115956826993780651","object":{"id":"https:\/\/noc.social\/users\/todayilearned\/statuses\/115956826993780651","objectType":"note","content":"<p>TIL in 2002, it was mathematically proven that properly comparing the wealth of nations (or of a nation to itself in the past) is impossible<\/p><p><a href=\"https:\/\/pure.uva.nl\/ws\/files\/2255113\/131873_An_impossibility_theorem.pdf\" rel=\"nofollow noreferrer\">https:\/\/pure.uva.nl\/ws\/files\/2255113\/131873_An_impossibility_theorem.pdf<\/a><br \/><a href=\"https:\/\/noc.social\/tags\/til\" class=\"mention hashtag\" rel=\"tag\">#til<\/a> <a href=\"https:\/\/noc.social\/tags\/todayilearned\" class=\"mention hashtag\" rel=\"tag\">#todayilearned<\/a><br \/><a href=\"https:\/\/www.reddit.com\/r\/todayilearned\/comments\/1qmoaf7\/til_in_2002_it_was_mathematically_proven_that\/\" rel=\"nofollow noreferrer\">https:\/\/www.reddit.com\/r\/todayilearned\/comments\/1qmoaf7\/til_in_2002_it_was_mathematically_proven_that\/<\/a><\/p>","url":"https:\/\/noc.social\/@todayilearned\/115956826993780651","status_net":{"notice_id":null},"tags":[{"objectType":"http:\/\/activityschema.org\/object\/hashtag","displayName":"til"},{"objectType":"http:\/\/activityschema.org\/object\/hashtag","displayName":"todayilearned"}]},"to":[{"objectType":"http:\/\/activitystrea.ms\/schema\/1.0\/collection","id":"http:\/\/activityschema.org\/collection\/public"}],"status_net":{"conversation":"tag:gnusocial.jp,2026-01-26:objectType=thread:nonce=e7cfbe71da48ef9f","notice_info":{"local_id":"12000257","source":"ActivityPub"}},"published":"2026-01-26T00:48:39+00:00","provider":{"objectType":"service","displayName":"GNU social JP","url":"https:\/\/gnusocial.jp\/"},"verb":"post","url":"https:\/\/noc.social\/@todayilearned\/115956826993780651"}],"links":[{"url":"https:\/\/gnusocial.jp\/conversation\/6093469","rel":"alternate","type":"text\/html"}]}