1. A method for machine readable instructions backward compatibility, the method comprising: determining changes between first and second sets of machine readable instructions; identifying, from the determined changes, a change that causes a difference in an output of the second set of machine readable instructions compared to the first set of machine readable instructions; generating, by a processor, a backward compatibility switch related to the change that causes the difference in the output of the second set of machine readable instructions; and implementing the backward compatibility switch in the second set of machine readable instructions to selectively revert functionality related to the change that causes the difference in the output of the second set of machine readable instructions to functionality of the first set of machine readable instructions.