How do people talk without opening their mouth?

People can't talk without opening their mouth! Talking involves the vocal cords, which are located in the larynx (voice box) inside the throat. To produce sound, air from the lungs is pushed past the vocal cords, causing them to vibrate. This vibration creates sound waves that travel through the mouth and nose.

However, there are a few ways people can communicate without actually *speaking* verbally:

* Sign Language: This is a visual language using hand gestures, facial expressions, and body language to communicate.

* Writing: Written language allows people to communicate thoughts and ideas without speaking.

* Texting and Email: These methods allow for communication through written words via electronic devices.

* Braille: This tactile reading and writing system is used by blind people.

* Augmentative and Alternative Communication (AAC): This includes a range of devices and strategies, like picture exchange systems (PECS) or speech-generating devices, for individuals who have difficulty with verbal communication.

Let me know if you'd like to learn more about any of these methods!