ASA Double Base - Purpose of 8.2.M.4.?

[wadeintothem]

Runner is out
- On any force out attempt from the foul side of first base the D and the O may use either portion of the base.

I understood this to mean the "common/lay" use of the term "Force Out" (as ASA uses elsewhere as well) as opposed to the specific written Force out definition, which would make the above make no sense.

How I understood it from the 06 Clinic was for all intents and purposes the base becomes one base once the B/R situation was resolved and my hand out from 06 seems to indicate this as well.

ie.. from EZ Teams scenario - R1@1B - Liner caught by diving F3 who lands in foul territory. Can they use orange to make the out on R1 tagging up?

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If that is not allowed by rule, which I agree strictly written rules (and common sense) do not allow it.. but then why does 8.2.M.4 exist at all?

How do you have a "definition force" at 1B?
You can have a "layman" force at 1B.