This is, in fact, exactly what we want since it
shows that time is now being divided up between the two threads; thats’ why
the words and numbers are jumbled – first one thread executes and displays a
word, then the next thread executes and displays a number, then execution
returns to the first thread and so on until the first thread ends (when all four
words have been displayed) at which point the second thread can run without
interruption