They say a picture is worth a thousand words. So what's a Powerpoint presentation worth?
Well, here's a case in which 267 words have resonated through history, whereas the Powerpoint presentation may not have lasted until afternoon tea. See here what Abraham Lincoln's historic Gettysburg Address would have been like if Old Abe had been using today's technology.
And do make sure you read those 267 words if you haven't before. They are amongst the most moving few words in human history. Here's some context for it.
[Hat-tip, Stephen Hicks.]