Post B5k0ZeQLdjmSBUuxM0 by xkcd@mastodon.xyz
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 (DIR) Post #B5k0ZeQLdjmSBUuxM0 by xkcd@mastodon.xyz
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       Imagine you could ride alongside a sound wave. It would probably be pretty cool, right? We're putting in a departmental budget request to buy a really fast plane so we can check it out.https://xkcd.com/3238/