Are Engineering Comparisons Only Analogies?
Biologists and engineers often use similar language: feedback, control, networks, switches, error correction, robustness, optimization, and information processing. But using the same language does not mean biological systems and engineered systems have the same origin.
The comparison may simply reflect the usefulness of engineering concepts for understanding complicated systems.
Why This Matters
If the design case moves directly from engineering terminology to an engineer, it confuses a useful scientific analogy with evidence about origins.
Response
This objection is correct that engineering language alone cannot establish design. Biological systems must be investigated on their own terms.
At the same time, the similarities are not merely verbal. Researchers have identified genuine systems-level similarities involving feedback regulation, modularity, robustness, hierarchical organization, control, and trade-offs between performance and fragility.
The existence of those similarities establishes something interesting that requires explanation. It does not by itself decide whether the explanation is evolutionary convergence, physical necessity, intelligent design, or some combination of causes.
Question That Remains
When biological and engineered systems share the same organizational principles, what evidence could distinguish common functional constraints from evidence of purposeful organization?