Why could the Jacquard loom operate without feedback from the weaving process?

The Jacquard loom operated without feedback because it utilized a feedforward control system rather than a closed-loop system.1

In this configuration, the loom’s operation was governed by a pre-programmed set of punched cards that dictated the pattern by selectively raising warp threads. Because the machine followed these predetermined instructions directly, it did not require or utilize information from the weaving process itself to monitor or adjust its performance. Consequently, it functioned as an open loop system, where the output was determined entirely by the input program without self-correcting actions based on the actual state of the fabric being produced.213