Part 5/7:
With the density parameter gradually adjusted, Eurotic saw that with a density allowing for 0.5 meters between individuals, the estimate surged to 85,000. Crucially, he articulated the importance of density in visual perception, stating, "we are not that good with counting because there is twice as many people here." He illustrated that even small changes in spacing could lead to drastically different perceived crowd sizes.
By creating visual comparisons, Eurotic demonstrated the stark contrasts between varying estimates: showing what 40,000 versus 85,000 people looked like in the simulation. This nuanced understanding of crowd density helped him hypothesize that the number of protesters likely fell between 50,000 to 85,000, even challenging the police’s estimate.