Fellow speaker,
You can summarize events in the past to dramatize change for your audience. For example, you can say, "In the 1950s computers were housed in buildings, in the 1980s they were clunky objects on desktops, and now some are as small as a paperback book! To succeed in the world today, we need to embrace change and realize what worked "back then" won't always work "right now"."
From the past,
Tim
