On August 8, as Tiger Woods played this year's 2018 PGA Championship in St Louis, Missouri, not every eye was on him. One Twitter user was looking at the crowds.
Jamie Kennedy, who in his Twitter profile identifies himself as content director for The European Tour and Ryder Cup Europe, tweeted a photo comparing the crowds watching Tiger Woods play in 2002 versus 2018. The difference? Sixteen years ago the spectators were just watching Woods; now they're nearly all filming the action via their smartphones.
It's a perfect illustration of one of the ways smartphones have changed our lives.
Here's a look at how people had experiences before Smartphones — and how they do it now.