Humans have the longest childhood of any animal, which creates a parenting burden that is not shared by any other species. It is well then that we evolved to create marriage and marriage-like institutions. We could not have survived without it.
In today's lesson, the neuroscientist David Linden traces the roots of our extraordinarily long post-natal maturation to the crummy parts that we are made up of. Our neurons are inefficient, and quite similar to those of jellyfish. That is why, in order to be the clever species that we are, we need so many neurons, and require such a large brain to contain them all. That is also why, for our species, love and smarts must go hand-in-hand, in order for us to survive.