Sorting algorithms. Apparently there are an endless number of ways to visualize them in various contexts, and somehow it never gets old. Here sorting in the context of books on a shelf.
Fastest way to alphabetize your bookshelf
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How People Meet Their Partners
“So how’d you two meet?” There’s always a story, but the general ways people meet are usually similar. Here are the most common.
Saving for Retirement and Age
People tend to have more money saved up over time, but range and variation also grow, and often it’s not enough.