( ( in fact ) ( ( his argument ) ( ( ( is ( not scientifically ) ) ( ( ( based ( at all ) ) , ) ( ( ( at least ) not ) ( in ( ( the way ) ( he ( presented it ) ) ) ) ) ) ) . ) ) )
(ROOT (S (PP (IN in) (NP (NN fact))) (NP (PRP$ his) (NN argument)) (VP (VBZ is) (ADVP (RB not) (RB scientifically)) (VP (VBN based) (ADVP (IN at) (DT all)) (, ,) (ADVP (ADVP (IN at) (JJS least) (RB not)) (PP (IN in) (NP (NP (DT the) (NN way)) (SBAR (S (NP (PRP he)) (VP (VBD presented) (NP (PRP it)))))))))) (. .)))
in fact his argument is not scientifically based at all, at least not in the way he presented it.
(ROOT (S (NP (PDT All) (NP (JJ scientific) (NNS explanations)) (CC and) (NP (NNS interpretations))) (VP (VBN based) (PP (IN on) (NP (NNS facts)))) (. .)))