Net Promoter Score

Background, calculation methodology, assumptions, advantages and disadvantages.

Ikigai

Key takeaways from the book

Prediction Machines-The Simple Economics of Artificial Intelligence

My notes(excerpts) from the excellent book

Edwise - exploiting the long tail of education

A business that leverages the long tail.

The Paint Industry

The industry is more complicated than you think it is.

Payment cards at malls

The logic behind why some malls have their own cards for payment.