Consider the use cases View/respond to alert and View history. Both actors share the latter, but each has a different version of the former. Why do the actors have different versions of the...

Consider the use cases View/respond to alert and

View history. Both actors share the latter, but each

has a different version of the former. Why do the

actors have different versions of the View/respond

to alert use case? Would the diagram be incorrect

if each actor had his own version of the View

history use case? Why or why not?