[rhencke]

Human interaction is fundamentally persuasive, even when completely unintentional. I don't think you can get around that.

[__s]

You can get around it. A couple weeks ago I had friends over while their place had to be vacated for a few hours, they bought lunch, we played with cats

You can go after "all altruism is selfish" argument but you'll end up having to settle with "some altruism is more selfish than others"

[rhencke]

I find that experience to be persuasive, as well. It persuades me about the kindness of your friends.