人類の未来は二つの方向に分かれるでしょう：多惑星的になるか、ひとつの惑星に閉じ込められ、最終的には絶滅イベントが起こるかです。

The future of humanity is going to bifurcate in two directions: Either it's going to become multiplanetary, or it's going to remain confined to one planet and eventually there's going to be an extinction event.