a rule must change

Some problems are held in place by rules: a ban written for old technology, an approval pathway that doesn't fit a new kind of device, a building code that forbids the better material. The deciding move belongs to a public authority such as a legislature, a regulator, or a code body. Until it changes the rule, engineering cannot get through. There is a boundary to note. If the missing piece is a technical test method a standards committee could publish, or an incentive that buyers and funders could adopt on their own, those are different genes.