The thing is, people don't realize this argument fully. If you are to accept that life could take countless forms, most which we could never recognize or begin to understand, then it's quite possible rocks are lifeforms, as we don't recognize them as life now nor understand how they could be living. Since most people seemingly don't like the argument that rocks are living, then this shows that this argument (along with others) is flawed with very definition that they want "life" to have.
That's my point, and by extension, to say that life could take forms that we don't even understand, is flawed, because what life means is whatever definition we want to give it. Do we not understand our own definitions?
