Complex sentence: Total objectivity is arguably not even possible in some--or maybe all--situations, or is at least a process replete with uncertainties and challenges (cf. Latour, 1987: 63-79).
Split into simpler sentences: Total objectivity is arguably not even possible in some--or maybe all--situations. It is, at least, a process replete with uncertainties and challenges (cf. Latour, 1987: 63-79).