The answer is narcissism. If you've ever worked or lived with someone that suffers from NPD, you'll know that their self-image is infallible. No mater how half

The answer is narcissism. If you've ever worked or lived with someone that suffers from NPD, you'll know that their self-image is infallible. No mater how half-baked their ideas are, they truly, truly believe that it's the greatest thing ever. This only gets amplified when they succeed at something. Even more so when being surrounded by yes men and sycophants.