doi:10.1016/j.geomorph.2021.107837engGarcia, J.H.Ollero, A.Ibisate, A.Fuller, I.C.Death, R.G.Piegay, H.Reply to comment on Promoting fluvial geomorphology to ''live with rivers'' in the Anthropocene era (Garcia et al., 2021) by D. Rosgen (2021)ART-2021-126085In his comment on our recent article Promoting fluvial geomorphology to `live with rivers'' in the Anthropocene Era (Garcia et al., 2021), Dave Rosgen (2021) suggests that we make three erroneous claims about him and his technical protocol Natural Channel Design (NCD). In this reply, we contextualize and address his comments, analysing the repeated critiques in recent decades of NCD. In doing so, we touch on issues such as scientific and technical knowledge, the need to adapt to advances in science and techniques, the need to understand inherent gaps present in technical protocols and what is and is not a classification tool, as well as the narrow line between science and ethics. (C) 2021 Elsevier B.V. All rights reserved.2021http://zaguan.unizar.es/record/16543810.1016/j.geomorph.2021.107837http://zaguan.unizar.es/record/165438oai:zaguan.unizar.es:165438GEOMORPHOLOGY 389 (2021), 107837 [3 pp.]by-nc-ndhttps://creativecommons.org/licenses/by-nc-nd/4.0/deed.esinfo:eu-repo/semantics/openAccess