It is highly unlikely that recovery will be so fast. Some things take a long time to learn for a population. For example learning which plants are poisonous is

It is highly unlikely that recovery will be so fast. Some things take a long time to learn for a population. For example learning which plants are poisonous is quite costly for a population. Elephants in Botswana travel through the Kalahari desert to get to the Okavango delta. On this 650 mile migration they travel from watering hole to watering hole. It will take a very long time to recover from the loss of memories about their locations, because they die if they cannot reach the next watering hole in time.