These have been around for over a century. The problem is economic and strategic

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These have been around for over a century. The problem is economic and strategic viability.

now it’s possible.

Source date (UTC): 2020-12-11 22:15:51 UTC

Original post: https://twitter.com/i/web/status/1337521504645492746

Reply addressees: @SPQRIUS

Replying to: https://twitter.com/i/web/status/1337520908953513985

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