DTM.3:2 - Problem

Two common reductions erase the relation that drives the result. One treats every carrier as an unchanged source of identical transmission. Another computes a detailed participant trajectory but assumes its population consequences are just that trajectory multiplied by the number of participants.

“Carrier” here names the person, group, device or other participant in which the relevant variant is realized or retained for this model. It does not imply disease. A carrier’s state, its resources, the method it uses and the contact network remain different objects.