The reboot of Data Jawn, the Philly-centric data science event that took place Wednesday at the Science History Insitute, came peppered with deep thoughts, good memes and hard data.

Out of over a dozen speakers, perhaps the most striking was Magento’s Ben Garvey, who analyzed 1.5 million geo-tagged tweets in answer the long-running question: Is the “negadelphia” myth true? Are Philadelphians inherently negative?

Garvey captured over 100,000 tweets from each of the 13 biggest cities in the country and ran them through a speech sentiment analysis tool. After all that data-parsing, a gut-wrenching conclusion: Philly Twitter ranks 10th least positive among big cities in the U.S.

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