An at-a-glance understanding of which buttons are pressed most, based on the patina of the two left-most options – at the Shanghai customs checkpoint.

To what extent does the patina affect future responses? With an international user base – how might this bias be amplified or subdued compared to a more homogenous user base e.g. more or less sensitive to perceived local norms?

What would be the impact on the responses if the order of the buttons was reversed, and the patina was visible on the two most negative responses?

What do you mean your government doesn’t allow photographs in the customs hall?