Why can't we sleep

"we really need to think more about sleep and what happens within it. So much about sleep and dreaming remains unknown, and it is a genuinely exciting field of research, which can no doubt illuminate the underlying question of how our minds and bodies work, and the modes of their intersection".

One in four adults sleeps badly.
Sleeping pill prescriptions have increased dramatically over the last three decades, as have the incidence of sleep clinics.
Sleep used to be a natural state, easy as breathing, but increasingly it is an insecure commodity.
...Isn't it?

Our relationship to sleep surfaces and resurfaces throughout human history, each time telling us something new about our indivudual and collective psychology. From the industrial revolution to blue-light on our phones, from the ancient art of dream interpretation to the modern science of Freud, sleep is connected to wider social patterns, to shifting norms and expectations.