I was curious as to whether Robert Caro, he of the voluminous Lyndon Johnson biographies, might be on Twitter. Imagine my amusement when I found this:
To be clear: This account will almost certainly never be put to use. It has been reserved, however, “just in case.”
— Robert Caro (@RobertACaro) May 8, 2012
The dude has written four 1000-page installments of the life of one guy, and is working on another. I guess the idea of 140 characters at a time just doesn’t even compute.