3d) The article would benefit from a more thorough literature review that looks at barriers to the adoption of open practices. While some aspects of Open Science are not as well studied, Open Access (OA) has been written about extensively in the literature, including studies about opinions and attitudes, and some explicitly about barriers to change. There have also been efforts to document barriers to adoption of Open Data. A few references are below; a number of publishers have also conducted surveys of researchers' awareness of and attitudes towards both open access and open data.