Why is e-mail volume getting ever worse? I believe it’s because of a simple fact: E-mail is easier to create than to respond to. This seems counterintuitive — after all, it’s quicker to read than to write. But reading a message is just the start. It may contain a hard-to-answer question, such as “What are your thoughts on this?” Or a link to a Web page. Or an attachment. And it may be copied to a dozen other people, all of whom will soon chime in with their own comments. Every hour spent writing and sending messages consumes more than an hour of the combined attention of the various recipients. And so, without meaning to, we’re all creating a growing problem for one another.