81 LR Two Question 17
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Comments

Permalink Submitted by Bridgetcongo on Sep 5 2018
Structurally is this right...?
The position X is unsustainable. It (X) implies Y. If Y is true, Z. BUT Z would prevent X. (so X is unsustainable)

Permalink Submitted by majorgeneraldave on Sep 6 2018
I think that's a very good structural articulation!