Scrabble?! UNTEACHABLE

Definitions of UNTEACHABLE in various dictionaries:

In computer programming, unreachable code is part of the source code of a program which can never be executed because there exists no control flow path to the code from the rest of the program.Unreachable code is sometimes also called dead code, although dead code may also refer to code that is executed but has no effect on the output of a program.Unreachable code is generally considered undesirable for a number of reasons, including: Occupies unnecessary memory Causes unnecessary caching of instructions into the CPU instruction cache - which also decreases data locality. From the perspective of program maintenance; time and effort may be spent maintaining and documenting a piece of code which is in fact unreachable, hence never executed.However, unreachable code can have some legitimate uses, like providing a library of functions for calling or jumping to manually via the debugger while the program is halted after a breakpoint. This is particularly useful for examining and pretty-printing the internal state of the program. It may even be reasonable to have such code in the final version that is shipped to clients, if it may be necessary for a developer to attach a debugger to the client's running version in case a bug only occurs on their running production instance. This is different from debugging functions for which calls are inserted during development from time to time and were forgotten to be removed in the production version.