I think it's quite dangerous to assume most humans don't potentially have hidden agendas - and it's even easier to overlook if you happen to agree with them. A

I think it's quite dangerous to assume most humans don't potentially have hidden agendas - and it's even easier to overlook if you happen to agree with them. As for debate vs propaganda. Especially if the other person isn't willing to change their opinion, you've learn something. And those people usually have extremely interesting back stories. Engaging with humans instead of ideologies is far more rewarding.