why "public" cant like and comment on my facebook "public posts"?

[Emily]

it's a big issue for me.
I'm a painter and I hae followers and public audiences , but today I understood that just my friends can like and comment on my even public posts...
how can I change it ?

[Ronnie]

To do that, simply open up Facebook and then go to Account Settings. Then Select "Privacy Settings" from the pane to the left. Then on the Right you must lookout for a sentence which should read "Who can comment on my public posts". Now under that sentence change the setting from "friends" to "Everyone" and you are done! Also, you can enable "Followers" which is another way of attaining audience!