- Synthesized or highly processed versions of or replacements for a normally natural or well established substance; often for the purpose of cost. E.g. high fructose corn syrup, artificial flavors, rayon, chrome tanned leather, etc.
- Synthesized or highly processed substances that promise to provide the advantages of a natural or well established substance but without any of the drawbacks. E.g. sweeteners without calories, waterproofing sprays that promise breathability, anti-stick coatings that don't require the care of cast iron, replacing metal with light weight plastics, etc.
For me it tends to come down to two rules of thumb that my life experience has given me:
- Highly processed products (particularly food) tend to be unhealthy.
- There is no free lunch. If some new material promises to eliminate the drawbacks of an existing material, then it probably has different drawbacks that you don't know about yet.