How is randomly calling people without any prior discussion still the primary way to conduct phone interviews? It's like selecting olympic runners by doing a prior survey of people who sometimes go jogging, at random hours of the day telling them to get to your office as fast as possible and taking their distance over time as their score on the national leaderboard.

Especially when I'm already in contact with the recruiter over e-mail or IM, it would take no effort whatsoever to send a message like "could we have a call in an hour?" It would feel haphazard and somewhat disrespectful to receive an e-mail like that, right? Well, this would be a million times better than an unprompted call.