> Would you answer an unknown number and spend time taking a survey? > ...the survey respondents are always biased toward specific groups This could cut both

> Would you answer an unknown number and spend time taking a survey? > ...the survey respondents are always biased toward specific groups This could cut both ways, I think. Anecdotally, I grew up poor and we let all unknown numbers go to voicemail. No one was calling to give us a million dollars, we just presumed it was a bill collector.