Turns out that any one you hear is right because the robot was programmed with the two words. Its a sound frequency game. The programmer infused both words therefore leaving your brain to choose between the two...if you hear laurel then your ears pick on high frequency and if you hear yanny your ears pick on lower frequency and for those that hears the two, you are perfectly fine. This simply means your brain toggles between the two words. Any which way we all are right.