my take is folks can have a hard time when discussion enters into "causation" which then leads some who believe that looking for that is looking for an excuse - its not its looking for a reason.
Discovering a reason does not eradicate responsibilty but provides insight.
To attribute everything to "evil" for an excuse does not provide a reason, which imo the human brain must do (compared to instict in doggies). It is what makes humans the most inteligent iving creature.
The reason for that is a "reason". There profound and fascinating studies that have been done in the arena of insomnis, sleep depreived, and the profound results from those issues.
Some people can become psycotic and hallucinate when deprived , the human animal must have sleep, or the brain will misfire and very negative things can result. No tires - car wont move. Simple.
In addition they do not need to be mutually exclusive -and instead of inserting the word "excuse", the notion of understanding comes to mind.
But in the medical feild, focusing on cognition, sleep is important work.
There is a big difference between between being "tired" and sleep depreived. Exhaustion is different as well
its kinda like pain, there are levels of it. Someone being tired minimizes the profound imact of being actually not able , for whatever resason, cycle through to get into rem cycle of sleep. That is the restorative cycle.
You see a dog in rem when it moves its paws, eye flutter, mutter,little barks etc.
We do the same thing---rem is actually the segment of sleep that benefits the human mind