Facebook executives dodged saying how many more employees they're willing to hire to review nefarious content on its platform.

Why it matters: It's clear that human content reviewers are needed to address some of the biggest safety and security concerns on the platform, like suicide warnings and egregious content. Facebook has committed to doubling the number of staff monitoring content but it's not clear if that is a viable long-term strategy given Facebook's more than 2 billion users.

“I think this is actually where there’s incredible opportunity through technology,” Facebook safety chief Antigone Davis said. “I think the opportunity for technology to fill some of that — you know how many reviewers — is, I would say boundless."

The details: In a conversation with Axios' Kim Hart, Davis and VP of Product Guy Rosen touted that "every piece of content" that triggers the company's suicide prevention efforts is reviewed by humans. But in other instances, they conceded that automating the review is really the only way to scale their safety efforts.

• Rosen cited suicide prevention as a good example of how humans and machines can work together to mitigate risk. Rosen said they found success when the company started working on proactive detection through using technology to monitor comments.
• In other instances, they described ways in which machines can be more effective than humans, like using automation to immediately route user complaints to moderators that speak the native language used in the complaints.

Asked if technology alone can ever get ahead of some of the issues discussed at the event, Rosen said that it is "certainly not a silver bullet," but that they are "building the right set of tools," to conquer the avalanche of unforeseen safety issues "step by step."

The conversation occurred Thursday at a Facebook Security Summit in Washington. The event was designed to offer clarity into their efforts around tech addiction, privacy and safety.

• Facebook has been ramping up conversations arounds safety and security on its platform in response to instances of suicide and abuse over the year.
• It recently conceded that its product may not be good for consumer health and may not be a net good for democracy.