Okay, open them again, you need to finish reading this first.
Once you finish reading this, THEN close your eyes. Now, suitably blinded, find your nearest emergency light source. Can you get to a flashlight, lighter, book of matches, etc.?
How’d you do? Did it take long? When you finally found something, did the item work (did the lighter have fluid? the flashlight fresh batteries?). Did you hurt yourself stumbling around in the “dark”? Were you able to find something at all??
Now the important question: If you weren’t able to find a functional light quickly, easily and a safely right now… what are you going to DO about that? Remember, this was under safe, controlled conditions. Imagine if this had been after an earthquake or some other major event. Picking up some inexpensive, long-shelf-life LED flashlights is too cheap and easy these days not to have one available in every major room in your home.
Just a little food-for-thought from your lazy friend.