Require/reveal/enable/accelerate/deprecate/obsolete

The require/reveal/enable/accelerate/deprecate/obsolete living ontology pattern describes all tech tree and build relationships. It that can be conflated to require/reveal/accelerate or requires/leads to where this does not cause undue confusion.

require = without this, the tech does not appear
reveal tech possibility when it is achieved
enable further immediate tech development, some of which is revealed just now, some previously
accelerate parallel tech development or other factor, typically a quantitative change only
deprecate = this tech makes another less useful or desirable or more fragile or to not work sometimes
obsolete = this tech will obsolete another
obsoleted by = this tech is obsoleted by another