Can someone explain hashgraph like this?

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Not my original, but an old fave my oldest child found. walky123@walky123 posted this on my Facistbook feed, back when I had a Facistbook.....like before Steem and Steemit! I use it to explain ledgering to noobs abd now that I an a newb to hashgraph, I was wondering if there is a simple explanation for me....