When the foreign body from deep space penetrated the atmosphere, mankind witnessed violence beyond recognition for the first time - it was not a fall, but the piercing of the dimension by some existence. It tears not only the ionosphere, but also the fragile film called "physical laws" that wraps the surface of carbon-based civilization. The black tide that spews out is actually the entropy trapped deep in the singularity. They eat up the organic structure in the form of a storm, reducing civilization to a grand experiment of thermodynamic decay.
The survivors soon discovered that this purge was not an extinction, but a selection - just like the cells in the primitive ocean that suddenly learned to use calcium on the eve of the Cambrian Explosion. Only this time, the medium of the jump is the non-human genes awakening in the blood.