Seven$-$in$-$ten U$.$S$.$ adults say they have seen or heard something about the renaming of Twitter as X$.$ The platform's name change took place in July $2023.($From the Articles$)$ Given how visible Elon Musk is and how publicized this brand changes has been, a lesson is:

A$.$ It is impossible to reach everyone which goes back to my earlier statement you have to use a wider promotional mix to reach the most people of a targeted audience.

B$.$ It doesn't matter