What is the science or knowledge put into practical use to solve problems or to Brent useful tools

so i don't know what video you're talking about, but here's some stuff steve jobs gave as advice.

- love what you do.

- the worst thing that could happen might turn out to be the best thing that could happen.

- follow your heart and trust it knows where it's going.

answer; read and consider the content of the items;

answerindividual preferences are not revealed in the market for the good;

answermultidomestic strategy;