It is obvious that one ought to have a will stating how one wishes one’s estate to be distributed.
Conclusion (it is obvious)
One ought to have a will stating how one wishes one's estate to be distributed.
Evidence
If you don't have a will, then distant relatives you've never even met have a greater legal right to one's estate than one's beloved friends do.
Evaluate
Suppose we say this,
What does this assume? It assumes .
If we say,
What does this assume? It assumes .
Goal
So since this argument is saying, ,
it must be assuming that , or something similar to that meaning.