Time humanity has spent watching a youtube video.

gistfile1.js

// Example output from 'Luis Fonsi - Despacito ft. Daddy Yankee (Official Music Video)' (https://www.youtube.com/watch?v=kJQP7kiw5Fk):
//   "Max time: 51067 years; Time if all views made it to 63 seconds: 11429 years (+181 years per second)."

player = document.getElementById("movie_player");
currentTime = player.getCurrentTime();
duration = player.getDuration();
views = parseInt(document.getElementsByClassName("view-count")[0].innerHTML.replace(/,/g, ""));
maxTimeInYears = Math.round(views * duration / 60 / 60 / 24 / 365);
currentPositionTimeInYears = Math.round(views * currentTime / 60 / 60 / 24 / 365);
yearsPerSecond = Math.round(views / 60 / 60 / 24 / 365);
"Max time: " + maxTimeInYears + " years; Time if all views made it to " + Math.round(currentTime) + " seconds: " + currentPositionTimeInYears + " years (+" + yearsPerSecond + " years per second).";