Impossible, Until It's Not

Engineers say bumblebees can’t fly
Their wings are too short and their bodies too wide
But there one goes a-wandering by
It happens all the time
There’s just no way lightning could be born
They’ve measured the clouds and it just can’t form
But it cracks the sky in every thunderstorm
It happens all the time
It’s impossible, impossible
Impossible, until it’s not
There’s a light in the night from stars long gone
A half-formed thought becomes a song
We rise from our grief and go on
It happens all the time
There’s a lake that you cannot see across
A way through the woods that I thought I’d lost
Clearing out everything that it’s time to toss
It happens all the time