Dude, a heart rate. A heartbeat from 40 miles away? Imagine thinking I'm hiding in this cave, but I'm like 20 miles from the city. I'm good. Also, that means it's able to differentiate animal heartbeats, it's able to differentiate other heartbeats. It knows your heartbeat. How does it do that? Specific heartbeats. How? Think of all the heartbeats in 40 miles. When did it get that? When did it get that data? Was it when you had your little chest strap on at the gym? When did it get that? How does it have that? When did it get that data? Yeah, is it. How the fuck does it know what your heartbeat is like? Does it know if your heart is broken? Aww. Seriously, though, what else did. Like, what other things can they pick up? If they can pick up a human heartbeat, what other, like. From 40 miles away.