I'm not sure if strangers are really interested in giving opinions to your product, since you're kind of interrupting their leisure time. But, for those who ag

I'm not sure if strangers are really interested in giving opinions to your product, since you're kind of interrupting their leisure time. But, for those who agree and pay attention to your product... probably they'll give you honest opinions. Anyone who cares enough to be interrupted and pay attention to your presentation/talk, probably will tell you the truth on how they feel about it.