I think many of us in the modern world, we expect to be able to dive into bed at night, switch off the light, and we think that sleep is also just like a light switch, that we should immediately be able to fall asleep.
Creo que, en la actualidad, muchos pensamos en ir a acostarnos, apagar la luz, y creemos que el sueño es otro interruptor que puede apagarse para así dormirnos inmediatamente.