We sincerely thank Vanessa Didelez and Stefan Wager for their insightful and inspiring comments. Their views and thoughts on the topic of my article are of great value and truly contribute to put it into greater perspective.
"Rejoinder: Invariance, Causality and Robustness." Statist. Sci. 35 (3) 434 - 436, August 2020. https://doi.org/10.1214/20-STS797