How to Make Creaky Voice Available for Use in Other Languages

This is how new consonants get invented and then they become available, um, for being the result of other kinds of process. Once you invent creaky voice, uh, you're more likely to have another sound change that puts creaky voice in another position. So all of your speakers has been trained to attend to that difference, it becomes available. For example, I am pretty sure that all of the high tones in Navajo are not the result of coda glottal stops. It's other things have gone on. This makes me, gives me really interesting ideas for a language family I want to make.