The article makes out that adding lanes to back roads without changing anything else is bad. Unravelling implies that if you were to use roads like that as par

The article makes out that adding lanes to back roads without changing anything else is bad. Unravelling implies that if you were to use roads like that as part of your cycle network, you stop them from being a useful through route to motorized traffic ("Filtered permeability"). When you do that you don't need the bike lanes. As the article is implicitly about adapting existing motor-centric infrastructure I would have made a better point posting this brief video instead: https://www.youtube.com/watch?v=gdWllXfGGrg https://www.youtube.com/watch?v=gdWllXfGGrg