Importance or significance of knowing hydration %

Toast

I asked this in another thread but it may have gotten missed.

Can someone explain to me why it's important to know what hydration your dough is at?

...smugly parade your skill at herding a sloppy mess into something resembling bread.

Oh, and so that you can scale a recipe and tell other people how to replicate your loaf using bakers' percentages. That too.

ahaahhaaa, so true :) no but really, it is of curious interest to know how wet or slack a wet dough truly is... in saying that using different flours can throw all relevance out the window.... I find when I read a recipe that gives hydration it just gives me an idea of what dough and final texture the loaf will be, and flavour , yes

It's a parameter relating to the dough that characterizes it's development and handling, as well as the texture and flavour of the final loaf. So it's a good reference point when documenting a bake, either for discussions  (like here on TFL) or in bread formulae.