Convince PM to Implement Duplicate Observation Tool

##### Scenario Meta plans a Duplicate Observation Tool (DOT) to detect malicious copy-cat content and needs business justification. ##### Question How would you approach the PM to convince them this feature is needed and size its impact? What existing data sources would you evaluate to demonstrate the need for DOT? For each proposed data source, what are its pros and cons? ##### Hints Define success metrics, estimate prevalence of duplicate posts, analyze user complaints, revenue or engagement loss, A/B test design, assess data coverage and bias.