Quote:
	
	
		| 
					Originally Posted by j.p.s  What have they actually measured, since other factors have been brought into play?(For one, discomfort level.)
 | 
	
 They measured that it took on average ten minutes longer to fall asleep, and that the melatonin cycle was disrupted, and so on.  I don't need to list them because we've all read about it.  Quibbles about "discomfort level" and brightness and so on can be dealt with in future studies.