@deprecated_ii @hazlin Sometimes they're more complex for the opposite reason. I once heard of a company who had a polymer they developed 30+ years ago that was becoming expensive to produce because of monomer supply chain issues. One of their jr. engineers was working on a substitute and ended up building one using a more primitive formula that had better properties (long lifespan, cheaper to make) with less manufacturing cost or time. The notes from 30 years ago mentioned the polymer as "not plausible to manufacture". Stuff changes and people don't retain the knowledge of why they're stuck in their paradigm.