This reply to Botte (2019, Estimating normal rates of capacity utilization and their tolerable ranges: a comment on Mark Setterfield, Cambridge Journal of Economics, forthcoming) responds to criticisms of the methods used to estimate the normal rate of capacity utilisation and a tolerable interval of variation in the actual rate of capacity utilisation around the normal rate in Setterfield (2019a, Long-run variation in capacity utilization in the presence of a fixed normal rate, Cambridge Journal of Economics, vol. 43, no. 2, 443–63). It concludes with some further reflections on the concept of corridor instability.