Most CADs are already history based, and in fact can't work without it. A much bigger challenge is to make a historyless CAD AKA "direct modelling" I honestly

Most CADs are already history based, and in fact can't work without it. A much bigger challenge is to make a historyless CAD AKA "direct modelling" I honestly admit, I failed to understand how geometry solvers of direct modelling CADs work.