Summary Conclusions

It is not surprising that no valid argument has ever been discovered, or ever will be, against the genuineness of the Vinland Map. It is logically impossible, even for the most persistent of scholars, to find reliable evidence against a true proposition.
George D. Painter, one of the three original authenticators of the VM,
The Vinland Map and the Tartar Relation, Yale, 1995, p. xvii.

Summarize your findings:

The VM is real: # of arguments =
The VM is false: # of arguments =
The outcome cannot be decided: # of conclusions =

The answer is conclusive if all the arguments give the same conclusion, with no counter-conclusions. If there are any counter-conclusions, the study is inconclusive. Then, the study only becomes conclusive if either all the conclusions or all the counter-conclusions can be shown to be false.