‘What if sending an e-mail is an excuse to not think through a problem — a hope that we can grab a bite of someone else’s attention and make them do our thinking for us? What if we send a half-baked note when what we need is to risk personal contact via phone, through setting up a lunch or just by walking to the other side of the office? Maybe we send an e-mail when we want to pretend, to ourselves or someone else, that we’re being productive.’