that's not a straw man. he was asking for observable evidence of evolution. you don't get to just change the definition of a word as you see fit. the term 'evolution' isn't defined by which parts creationists object to. as far as changing from one kind to another... 1) 'kind' is not a scientific term, it's an ambiguous term used by creationists which is at best undefined and at worst incoherent. 2) it takes a long time, which means you can't just watch it happen. that doesn't mean you can't test that theory with other observations (e.g. fossil record, dna, molecular biology, etc). 3) it happens by the same exact process as the 'adaptions' you're already willing to accept. i've yet to ever hear a compelling reason for why a series of minor adaptions over millions of years couldn't radically transform a species over time.