Some people - the bozos, will hire people incompetent people on purpose
Apple CEO Steve Jobs used to talk about a phenomenon called a “bozo explosion,” by which a company’s mediocre early hires rise up through the ranks and end up running departments. The bozos now must hire other people, and of course they prefer to hire bozos. As Guy Kawasaki, who worked with Jobs at Apple, puts it: “B players hire C players, so they can feel superior to them, and C players hire D players.” That’s the bozo explosion (...).
The last 10% is 90% of the work
[Oprah Winfrey said in one of the interview she was giving :]
"There’s a wonderful phrase by Maya Angelou, from a poem that she wrote called “To our grandmothers”, that she says:
“I come as one, but I stand as ten thousand.”
So when I walk into a room, particularly before I have something really challenging to do, or I’m going to be in a circumstance where I feel I’m going to be you know, up against some difficulties. I will literally sit, and I will call on the 10,000."
Note : the actual phrase in the poem is : "I go forth along, and stand as ten thousand."
The Brook's law states that when a person is added to a project team, and the project is already late, the project time is longer, rather than shorter. Brooks’ law is recognized as applicable to any complex endeavor involving lots of people interacting together, not just software engineering.
[Many people] think it means accept failure with dignity and move on. The better, more subtle interpretation is that failure is a manifestation of learning and exploration. If you aren’t experiencing failure, then you are making a far worse mistake: You are being driven by the desire to avoid it. And, for leaders especially, this strategy — trying to avoid failure by out-thinking it — dooms you to fail.
Differentiation between products is driven by the activities of the firm: product design, product performance, quality, branding, advertising, distribution, and so on. The more a product is differentiated along a dimension consumers care about, the higher price premium it can demand. So, Starbucks can charge $3.50 for a cappuccino, Hermès can charge $10,000 for a Birkin bag, and they can do so largely irrespective of input costs.