I think your question actually raises a key point ... "one of these bubbles". How accurate is their prediction that these bubbles aren't common? And is there somewhere nearby that might be hiding one?
On their time-scale, Musk's goal of becoming an interplanetary species seems like a good near-term hedge. Being able to traverse our own galaxy would be a good second step but exponentially harder. People have discussed the almost impossible task of moving between galaxies (without something like a worm-hole).
So, assuming the multi-verse theory is correct, I guess we humans need to look into how to get to another universe before this big cataclysm. (It seems pretty easy on "Stranger Things")
On their time-scale, Musk's goal of becoming an interplanetary species seems like a good near-term hedge. Being able to traverse our own galaxy would be a good second step but exponentially harder. People have discussed the almost impossible task of moving between galaxies (without something like a worm-hole).
So, assuming the multi-verse theory is correct, I guess we humans need to look into how to get to another universe before this big cataclysm. (It seems pretty easy on "Stranger Things")