I think the K-T event wouldn’t be that big of a filter, it doesn’t seem that unlikely to me. After all, there have been five great extinctions already (the Permian extinction being an even greater one).
Also, encephalization quotient has been superseded by cerebral neuron count— and pilot whales actually have more neocortical neurons than humans. I believe the greatest filter we have passed is actually language, as it facilitates the preservation and sharing of information. Language allowed for the agricultural revolution and the development of civilization.
I think the K-T event wouldn’t be that big of a filter, it doesn’t seem that unlikely to me. After all, there have been five great extinctions already (the Permian extinction being an even greater one).
Also, encephalization quotient has been superseded by cerebral neuron count— and pilot whales actually have more neocortical neurons than humans. I believe the greatest filter we have passed is actually language, as it facilitates the preservation and sharing of information. Language allowed for the agricultural revolution and the development of civilization.