Every business is created by people and survives by benefiting other people. To understand how businesses work, you need a firm understanding of how … - Josh Kaufman

Absence blindness is a cognitive bias that prevents us from identifying what we can't observe.

these foundational business concepts mental models, and together, they create a solid framework you can rely on to make good decisions. Mental models are concepts that represent your understanding of “how things work.” Think of driving a car: what do you expect when you press down on the right-side pedal? If the car slows down, you’ll be surprised — that pedal is supposed to be the accelerator. That’s a mental model — an idea about how something works in the real world.

the “quantity” group was busily churning out piles of work and learning from their mistakes, the “quality” group had sat theorizing about perfection, and in the end had little more to show for their efforts than grandiose theories and a pile of dead clay.