Shriram Krishnamurthi on Nostr: Pretty certain the single most surprising thing I've learned in the recent past is ...

Pretty certain the single most surprising thing I've learned in the recent past is that the VIKINGS got to BAGHDAD and repeatedly attacked CONSTANTINOPLE. (They used the Volga&Dnieper.) Not a word about it in my entire education! Here's a brief history:
https://www.history.com/news/globetrotting-vikings-the-quest-for-constantinople