What's the name for that law when there's something you never think of and then you encounter multiple times really quickly? Because a couple of days ago, Bob Kerns published a really cool Periodic Table input element on Observable:<p><a href="https://observablehq.com/@bobkerns/elements-input" rel="nofollow">https://observablehq.com/@bobkerns/elements-input</a><p>(not to take anything away from the submitted periodic table - they're both really nice)