> I believe interpretation is a part of the definition of a constitution, you do not, we have different definitions, oh well.

You can't just brush it aside as some quibble about definitions. It's a fundamentally substantive difference in the two structures: one of these has an indisputable source of truth (a foundation everyone can witness) that everything else is built on top of -- however shakily! -- and the other does not. Regardless of whether you include the upper parts of this metaphorical building in your definitions or not, the foundations are not the same.