Which requires being able to see the plug. | Hacker News

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		saagarjha 25 days ago \| parent \| context \| favorite \| on: James Moylan, engineer behind arrow signaling whic... Which requires being able to see the plug.

YeahThisIsMe 25 days ago [–]

As with most plugs that came before it.

saagarjha 25 days ago | [–]

They were not externally symmetric

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