Copying @gkellogg's comment from #53 into this new issue:

The extracted header rows are different from the name of the column. I guess this is most closely related to the title rather than the name metadata. However, it does come into play for an uninformed-mapping, where there is no metadata, and presumably the column header is used to construct the default name.

If we have a CSV with two header rows, such as the Use Case #12:

5
methane molecule (in angstroms)
C        0.000000        0.000000        0.000000
H        0.000000        0.000000        1.089000
H        1.026719        0.000000       -0.363000
H       -0.513360       -0.889165       -0.363000
H       -0.513360        0.889165       -0.363000

I think that this shows four columns where the first column is the only one with a header cell, which is the two values ["5", "methane molecule (in angstroms)"].

The metadata document states the following:

If the column already has a title annotation (because a header row has been included in the original CSV file) then a validator must issue a warning if the existing title annotation is not the same as any of the possible column titles.

Is this one title or two? How must this correspond to title information from the metadata?

(This seems to be off-topic for this issue, but may need to be tracked someplace, anyway).