Mumbling is considered rude and usually not to be encouraged. But sometimes good things come from not-s0-good behavior.
My oldest daughter had taken all of the classes she could take at the closest community college and now was gong to continue her education as an ASL interpreter at the college 40 miles away. So we started working on the logistics of the commute.
I called the Transit Company and asked, “Do you have discounts for students who will be traveling on your system?” “We do for students under 18,” I was told. Dang. But before I hung up I mumbled, “No. She’s 20 and going to college.” “Oh!” was the response. “Is she is going to the University?” Dang, again! We had edged closer just be pushed off the cliff. “No”, I again mumbled. “She’ll be going to the Community College.”
“Oh!” the employee responded, again. “The Community College subsidizes a pass that is available for their students.” Success!!
It is frustrating to realize that unless you ask the correct question, when you have no idea what that question is, you won’t get the correct answer But cheer up! Mumbling may provide the right question! You may want to try it sometime.