Maybe they won't do this...But, consider how big A/B testing is nowadays. Imagine if you could A/B test, but not just see which maximizes engagement, but also s

Maybe they won't do this...But, consider how big A/B testing is nowadays. Imagine if you could A/B test, but not just see which maximizes engagement, but also see which causes more fear, excitement, etc. Who knows if that can be monetized, but it seems that there are actually some ways heart beat can be used for other products.