Jan 21 2015: The 1989 film “Back to the Future II” showed life on Oct 21, 2015. Nine months to invent SelfWalking Dog Leashes
.@neiltyson self-walking dog leashes can't be that hard. Just need a strong enough drone to play tug-o-war with a German Shepard size dog
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@vgr@neiltyson biggest problem is getting wrapped around polesThanks. Twitter will use this to make your timeline better. UndoUndo
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