You might explain that such a rule for $x_ t+1 $ only applies for values of $t$ the place the "current placement" (A different hidden variable; make an analogy using a "program counter" register if you like) in the program is at that assertion, Which, implicitly within the absence http://onlineprogrammingassignme52580.acidblog.net/25657983/the-greatest-guide-to-programming-homework-help