Anonymous ID: 5136ce Feb. 17, 2022, 9:08 a.m. No.15650219   ๐Ÿ—„๏ธ.is ๐Ÿ”—kun   >>0233 >>0239

>>15650215

There are known knowns; there are things we know we know.

 

We also know there are known unknowns; that is to say we know there are some things we do not know.

 

But there are also unknown unknowns โ€” there are things we do not know we donโ€™t know

 

Donald Rumsfled