Philosopher Bertrand Russell once said that "The fundamental cause of the trouble is that in the modern world the stupid are cocksure while the intelligent are full of doubt." Discuss the meaning of this sentence with reference to the Johari window and the Dunning-Kruger effect. In particular, if people are largely unaware of their deficiencies (Johari's "blind" area), are we wrong to scorn them for it? Also, it's interesting that Russell choose to emphasise that this is a problem in "the modern world." Are stupid people more confident now than they have been in the past? Are intelligent