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No one is ever given that choice.
Don't quite understand this preoccupation with luck.

The whole thing about luck is moot.
It's like saying, I'd rather be lucky in Vegas than smart in every day life.
If you can't do anything about it (luck, that is) why spend even 5 min. thinking...

DAL is irrelevant because you can't predict it or measure it.
What difference could it possibly make in preps?

Care to let us in on the definition of DAL?