Humans are not machines, a system where we absolutely have to pay attention 1% of the time but have to just stare mindlessly the other 99% doesn't work. Humans

Humans are not machines, a system where we absolutely have to pay attention 1% of the time but have to just stare mindlessly the other 99% doesn't work. Humans don't work like that and we will space out even if we try not to. Especially when you have to do it for hours on end.