Who cares if it is an innovation?

I sometimes hear argument about whether this or that proposition represents an innovation or not: to which extent is it really new? How do we know we are the first? How different is it from this other proposition?

Who cares? If it creates value, it's worth pursuing. It may not be new-to-the-world, but if it is new-to-my-corner-of-the-world it is innovation all right.