[gmluke]

> standing people pack tighter than walking people, therefore all standing ends up with more throughput, at the expense of lower individual latency (for the would-be walkers)

If the would-be walkers derive much greater than average utility from a quick journey, isn't it likely that the all-standing regimen achieves higher average throughput at the expense of lower average utility?

[usrusr]

When there are enough passengers to saturate full all-standing throughout, reducing throughput to allow individual latency improvement will soon cause waiting times before the bottleneck. Once a sufficiently long queue has formed, newly arriving walkers will not have a quicker total journey than they would have had under throughput optimization with shorter (or no) queues.