What topic continuity problem?

A common objection to the very idea of conceptual engineering is topic continuity problem: whenever one tries ‘reengineer’ a concept, only shifts attention away from concept another. Put differently, there no such thing as revision: there's replacement. Here, I show that compatible with Whether preserved in an act replacement simply depends on what being replaced (a tool or role) and under discussion is. Thus, problem arises failure specify these two things.