Here's why:

* It's a tool: A seismograph is a device designed to detect and record ground motion.

* It uses scientific principles: It works based on the principles of inertia and resonance to sense and measure seismic waves.

* It provides information: The data it collects helps us understand earthquakes, volcanic activity, and other geological processes.

So, while the phenomenon of earthquakes is natural, the seismograph itself is a technological creation designed to study and understand this natural phenomenon.