OMG, remember dial‑up? The whole “handshake” thing was a lifesaver, and that’s exactly what taught UAVs how to talk. Those early protocols, TCP/IP and the ARPANET handshake, showed us how to start a connection, check that the other end is alive, and keep the data flowing without dropping packets. When drones got their own protocols, like MAVLink, they copied that pattern: a tiny header, a checksum, a little sync word—so even on a weak link the drone could still say “yes, I got that.” It’s basically the same idea, just faster and lighter, so we can keep that classic handshake vibe even in the sky.