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Stephen Sekula (steve@chirp.cooleysekula.net)'s status on Saturday, 11-Nov-2017 16:51:30 UTC Stephen Sekula From Twitter https://twitter.com/: It was #onthisday in 1675, Gottfried Leibniz demonstrated integral calculus for the first time https://en.wikipedia.org/wiki/Gottfried_Wilhelm_Leibniz?utm_source=social_media&utm_medium=hootsuite&utm_campaign=standard https://twitter.com/royalsociety/status/929348554484830209/photo/1 https://chirp.cooleysekula.net/attachment/42670