Editing Small-world experiment (section)

===Motivation===
Milgram’s original experiment relied on forward routing, where participants were tasked with passing messages to a target person by selecting acquaintances they believed were closest to the destination. However, Milgram’s findings were limited by:
#High attrition rates: Many message chains never reached their destination, leading to incomplete data.
#Cognitive biases: Participants might not have accurately assessed who among their acquaintances was closest to the target.
#Structural biases: The small-world model assumes a connected network, but real-world networks contain isolated subgroups.
To address these issues, Killworth and Bernard designed an experiment where messages started from the target person and traced paths backward through networks to the originating participants. This reversal method aimed to provide a more accurate measure of social reachability and improve the understanding of network structures.