That might seem like a strange comment. After all, writers use figures of speech all the time to enhance their stories and articles. BUT, they are writing for an audience living today and who know what these expressions mean. Figures of speech use words in an imaginative way. – Example: His attitude was as cold as ice. – When your gr. grandchildren read your personal or family history twenty or thirty years from now, that statement many not mean anything and just confuse them. Expressions change from one generation to the next.
Technology terms will change too, as will social media lingo. If you choose to talk about enjoying social media, such as Facebook, Twitter, or Instagram, be sure you explain what the expression you use mean. People may not be using hashtags (#) in 5 years, let alone in 20. Don’t say that you used #bluebling at the end of all your tweets unless you explain what Twitter and Tweets are (or were) and how and why hashtags (#) were used.
Everything you include in your personal story should be clear for future generations. Simple explanations go a long way to make your story something your great grandchildren will love to hear over and over.