so luke made a good defense of the use of light sources, encumbrance, movement speed, etc. in D&D in this thread
and then this occurred to me:
sooo the Load concept in DW covers encumbrance already, but what about light sources?
so. all light source items could have a Brightness stat.
candles get bright+0
torches get bright+1
lamps get bright+2when you dilly dally while the flame burns down
, roll +bright for your current light source.
on a 10+, you've got time to ... burn.
on a 7-9, you're running low. your lamp or whatever takes -1 to Brightness ongoing until you refill the oil cartridge or whatever.
on a miss, the flame gutters and is gonna go out. you have enough time for 1 or 2 quick actions before the light goes out altogether.