The lifts of the cruise ship I was on earlier this year were very slow when responding to calls.

I wondered if it was the software? Have they deliberately made the lifts less than optimally responsive to hails so as to encourage passengers to use the stairs instead? (God knows we needed to, given the amount of food available on board...)

Assuming the lifts were not loaded with cynical software, it must be human behaviour that is impeding their responsiveness. Here are some of the behaviours I observed.

It would be interesting to interview these passengers to understand what they were thinking (or not as may be the case.)

There may well be simple mechanisms the designers can implement to reduce the impact of these behaviours, or provide diversions to reduce these behaviours.

It is also interesting to note how these behaviours interact with each other to compound and amplify the problem.

Image: Image courtesy Shutterstock.