Technological trajectory
A technological trajectory is the path along which a technology tends to advance, shaped by past choices and shared expectations.
Technologies do not improve in random directions. They tend to follow paths, and the paths themselves shape what gets invented.
A technological trajectory is the direction along which a technology tends to advance, channelled by accumulated knowledge, shared expectations, and the problems engineers agree are worth solving. Once a trajectory is established, improvement tends to run along it, refining the same basic approach rather than striking out in new directions.
Why technology has grooves
Progress is not a free search across all possibilities. Engineers work within a shared framework of what counts as a problem and what counts as a solution, what some call a technological paradigm. That framework focuses effort productively but also narrows it: certain avenues are pursued intensively while others are barely considered, not because they are inferior but because they fall outside the agreed direction of travel. The trajectory is the well-worn groove the field runs in.
The strength and the blindness
A trajectory delivers cumulative, compounding improvement, which is its great strength. Its weakness is the blindness it creates. A firm and an industry committed to a trajectory can become so good at advancing along it that they miss a different approach developing elsewhere, on its own trajectory, that will eventually prove superior. The skill that drives progress along the path is the same skill that hides the path's limits.
Reading the path
For strategy, the value is in recognising that a trajectory exists and asking where it leads, how much room it has left, and what alternative directions are being neglected. The most dangerous competitor is often not the one improving faster along the same trajectory but the one advancing along a different one that the incumbents have dismissed.
Technological trajectories explain why progress feels both relentless and strangely narrow, and why disruption so often comes from a direction the leaders were not looking. The groove that makes improvement efficient also makes the field collectively short-sighted about everything outside it.