Not everyone is comfortable with the truth and constantly saying it to people will make them withdraw from you completely. I get that the purpose of being honest with others is for them to make positive changes and set things right but they see it differently.
Humans are afraid of the truth and I can relate to what it feels like allowing things slide just for the sake of your experiment and not wanting to hurt others feeling.
I hated this experiment in all honesty. I don't mind comforting lies lol