I have a hard time understanding #3 and #8 of Lehman's Laws of Software Evolution.
The laws are:
- (1974) "Self Regulation" — E-type system evolution processes are self-regulating with the distribution of product and process measures close to normal
- (1996) "Feedback System" (first stated 1974, formalised as law 1996) — E-type evolution processes constitute multi-level, multi-loop, multi-agent feedback systems and must be treated as such to achieve significant improvement over any reasonable base
The rest of the laws are clear to me.
Could someone explain these two laws?