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There are numerous credible designs for space ships able to reach a few percentage points of the speed of light.

Reaching 10% would be enough to visit nearby stars within a lifetime.

And once we can extend human life spans to many hundreds of years these journeys become even more achievable.

>credible designs

As I said elsewhere, I think the disconnect here is between potential and probable. Homo sapiens have twice come to the edge of nuclear oblivion already (being saved only by luck essentially), and I would wager we are are speeding much faster towards nuking each other than reaching the stars.

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