Arnold

[Helen Czerski @helenczerski]

A friend has just shown me this book "Calculus made easy", published in 1914, and I think it's got one of the best prologues I've ever seen. This is *exactly* what textbooks should be doing. And they should all be honest about how terrifying the topic names are too.

[John Hammond @_JohnHammond]

Hi yes hello Twitter I am going to tell you my deep dark secret please don't tell anyone

I have no idea what I'm doing