how could such a thin piece of plastic make such a difference?
Not a moment to soon it would appear.
It's snowing up a, uh, a storm out there tonight. And the temperature for Friday night looks to go down to -29C. So we're ready for it.
It really does make a huge difference with the plastic on the windows. Without it the furnace is on all the time and it's always cold in the place. So let winter come, we're ready.
(Course those could be famous last words, but I hope not!)