Most of the time when you think there's a demand in market, there might be none at all.

Most of the time when you think something doesn't sell at all, it might surprise you a lot.

Statistics can be useful and harmful.
It tells you what customers want today but doesn't help you to shape a different future.

It's not that you have used a wrong statistics tool or you have done a wrong analysis.
It's the nature of statistics to be blamed, worse if you have applied an inductive statistics.

It's not only a game of math.
It's a game of people, and people are emotional and irrational.

Feel the market through your nerves.
Math is just a tool to be used as reference.