CONCEPT
Trajectory and Channel
Clarke's operational distinction for navigating technological prediction — the destination is visible, the route never is.
Clarke got the trajectory of satellite communications right in 1945 and the smartphone wrong across his entire career. He got the trajectory of artificial intelligence right from the 1960s and the specific channel — statistical pattern-matching on text rather than logical programming — wrong until it arrived. The pattern is the most important regularity in the history of technological prediction: the broad direction of technological development is far more predictable than the specific forms it takes. The laws of physics constrain the endpoints. They do not constrain the routes. Distinguishing trajectory (reliable) from channel (contingent) is the operational discipline required for anyone — futurist, policymaker, parent, builder — trying to navigate the AI transition.
In The You On AI Field Guide
Clarke's 1945 Wireless World paper proposed geostationary satellites with mathematical precision. The trajectory — global instantaneous communication — was visible from the physics. The specific artifact that would eventually carry satellite communication into every pocket was not. He did not predict the smartphone. He did not predict social media. He did not predict the