My sofa is like the universe, coins, keys, lighters and the rest, in a constant cycle of disappearing, re-appearing.
Things are constantly being lost and found. And then lost, and then found. Just like my sofa and the universe, humanity will disappear, and then re-appear. Knowledge will be lost and then found again, undiscovered and then rediscovered.
Eventually we will all amuse ourselves to death and the program will begin again.