“One approach that guarantees that all employees will eventually receive the news is to share it with one or two well-connected and chatty colleagues and ask them to keep the news a secret.
This approach works out because there is almost no other information that is more quickly exchanged among colleagues than personal news that is shared under conditions of confidentiality. The reason for this fact is ssquite simple: Human beings are social creatures who have a genuine interestin their peers, and sharing information about others is a usual behavioral pattern for renewing or strengthening social connections…”
Daniel Drescher (2017): Blockchain Basics
page 145 ff