Seriously mind boggled facebook question?

[Kourtney]

If you are friends with someone on facebook how can u still be their friend but they can hide everything including pics so that u can't see it ? Most weirdest thing was before Idk why setting she made it to but after she accepted my request I couldn't see any pics and I told her that then she said try again like WTF I could see her pics what setting did she make her account anyone know

[Daniel]

They Can Add you to the Restricted List Under Each Privacy Setting That Will Make it So That you Cant See it They Can Also Do That With Posts As Well