I can only commend Spudnik's exemplary use of footnoting to provide background.
If past is prologue, what is the prologue?
The day before tomorrow?
Wow, Now I understand Days of Future Past!
I have certainly breathed deep some gathering gloom in my day...
Make sure it has no asbestos in it!
I don't know, did they make bongs out of asbestos?
But opening theory is always for high rated players. The result of the opening (black is slightly better) guarantees black a draw. My experience learns that after the defence against Qh5, black has it relatively easy.
What if white moves 6.d4?
What does any of this have to do with asbestos bongs?